In an isolated oceanic island, a species of birds exists with the majority of gray plumage. A variety with white spots constitutes more than 100 of the population.
This characteristic is due to a recessive gene (s) to the entire gray color plumage (S). What is the frequency of the s gene?The frequency at which the gene s is found can be calculated as follows:Frequency of the gene s = square root of the proportion of the population that has the characteristic (white spots).Therefore, the frequency of the s gene would be:frequency of s = sqrt(0.04)frequency of s = 0.2Therefore, the correct option is b. 0.2.
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.DNA is the genetic material that makes up living things, and folic acid plays an important role in the formation of DNA. Jon wants to study the effect of folic acid on DNA formation in microbes. Which statement accurately describe the variables in this study?
xiao t, et al. (2005) histone h2b ubiquitylation is associated with elongating rna polymerase ii. mol cell biol 25:637– 651.
The paper by Xiao et al. (2005) titled "Histone H2B ubiquitylation is associated with elongating RNA polymerase II" was published in the journal Molecular and Cellular Biology.
In this study, the authors investigated the association between histone H2B ubiquitylation and RNA polymerase II during transcription elongation.They conducted experiments to examine the dynamics and distribution of ubiquitylated H2B on chromatin, as well as its relationship with RNA polymerase II. The results of the study showed that histone H2B ubiquitylation is indeed associated with elongating RNA polymerase II. The authors observed that H2B ubiquitylation levels increased along actively transcribed genes and were highest at the 3' end of genes.
They also found that the presence of ubiquitylated H2B correlated with the presence of RNA polymerase II on the chromatin. In conclusion, Xiao et al. (2005) demonstrated a link between histone H2B ubiquitylation and the activity of RNA polymerase II during transcription elongation. Their findings contribute to our understanding of the regulatory mechanisms involved in gene expression.
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the sodium-potassium antiporter works by active transport. what would happen to the transport of sodium and potassium if a cell ran out of atp?
The sodium-potassium antiporter works by active transport and the effect that would occur in transport if the cell ran out of ATP would be that: less potassium would be transported into the cell by the antiporter.
Active transport is the type of transport where the molecules are transported using the energy. This energy is required because the movement of molecules occurs uphill. i.e. from its region of lower concentration to the region of higher concentration.
Antiporter belongs to the cotransport system of the secondary active transport. In this the two molecules travel in opposite directions. This is achieved by the downhill transport of one molecule that releases energy in the form of ATP and this energy is then used for the uphill transport of another molecule.
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a sample of an unknown liquid has a volume of 12.0L and a mass of 6g. what is its density? show your work explain how you determined this value brainly
Explanation:
12.0L =12000cm^3
\(density = \frac{mass}{volume} \)
\( = \frac{6}{12000 } \\ = 0.0005 {gcm}^{3} \)
2. 40% of the students on a field trip love the museum. If there are 20 students on the field trip, how many love the
museum?
8. Maya spent 40% of her savings to pay for a bicycle that cost her $85.
How much money was in her savings to begin with?
b. How much money does she have left in her savings after buying the bicycle?
a.
Answer:
2. 8 students love the museum
8. $212.5
she will have $127.5 left
non-native kudzu plants out competing local southeastern plants for resources is known as which threat to species?
Non-native kudzu plants outcompeting local southeastern plants for resources is known as the threat of invasive species.
In this case, kudzu plants, being non-native, pose a significant threat to native southeastern plants by competing for essential resources such as sunlight, water, and nutrients, ultimately affecting the local ecosystem's balance and biodiversity. Native species are directly threatened by invading species when they prey on them, compete with them for food or other resources, spread disease, prevent native species from reproducing, or kill the young of native species. Moreover, invasive species pose indirect risks.
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Indicate whether each structure is part of the systemic or pulmonary circuit. Right ventricle Respiratory capillaries Pulmonary trunk Brachial veins Pulmonary Circuit Pulmonary arteries Femoral arteries Aorta Vena cavae Carotid arteries Lungs Systemic circuit Left atrium Pulmonary veins
Aorta, left atrium, brachial veins, and carotid arteries are among the structures that make up the systemic circuit. Pulmonary arteries, the vena cava, and the lungs are components that make up the pulmonary circuit.
What architectural elements make up the systemic circuit?The systemic circuit includes the right atrium and left ventricle. The systemic circuit is in charge of transporting oxygenated blood from the heart to the tissues and cells as well as returning deoxygenated blood to the heart.
What elements make up the pulmonary circuit?A huge network of arteries, veins, and lymphatics called pulmonary circulation transports blood and other bodily fluids between the heart, the lungs, and the back.
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the world wildlife fund has declared that global warming, a phenomenon most scientists agree to be caused by human beings in burning fossil fuels, will create havoc among migratory birds by altering the environment in ways harmful to their habitats.
In conclusion, the WWF warns that global warming caused by human activities will create havoc among migratory birds by altering their habitats in harmful ways. These alterations can disrupt their food sources, nesting sites, and migration patterns. It is crucial to address and mitigate the causes of global warming to protect these birds and their habitats.
The World Wildlife Fund (WWF) has stated that global warming, primarily caused by humans burning fossil fuels, will have detrimental effects on migratory birds and their habitats. This phenomenon will alter the environment in ways that are harmful to these birds. The WWF's declaration is supported by the consensus among scientists that human activities contribute to global warming.
Global warming leads to changes in climate and the natural environment. This affects the availability of food and nesting sites for migratory birds, disrupting their migration patterns and potentially causing population declines.
For example, rising temperatures can lead to shifts in plant and insect populations, affecting the availability of food sources for birds.
Additionally, changes in precipitation patterns can impact the availability of wetlands and other important habitats for these birds.
In conclusion, the WWF warns that global warming caused by human activities will create havoc among migratory birds by altering their habitats in harmful ways. These alterations can disrupt their food sources, nesting sites, and migration patterns. It is crucial to address and mitigate the causes of global warming to protect these birds and their habitats.
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list four media of transportation in living organism
Answer:
Numerous types of transportation are available to living things, including:
1. Circulation: The movement of oxygen, nutrients, hormones, and waste materials throughout the body is referred to as circulation. The heart, blood arteries, and blood make up an animal's circulatory system.
2. Respiration: This is the process through which an organism and its surroundings exchange gases like oxygen and carbon dioxide. Animals and plants both use their lungs or gills for respiration, while plants use small openings called stomata.
3. Lymphatic system: This system of tissues and blood arteries aids in the removal of extra fluid from the body and the movement of immune cells to the areas of infection.
4. Transport in plants: Through specialised tubes known as xylem and phloem, water and nutrients are transferred from the roots to the rest of the plant in plants. Translocation is a procedure that is crucial for the development and survival of plants.
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lupus and multiple sclerosis result when the immune system: please choose the correct answer from the following choices, and then select the submit answer button. answer choices responds too strongly and attacks the body's own tissues. responds too weakly and allows the body's tissues to be attacked. underreacts and allows bacterial infections to flare. underreacts and attacks the body's own tissues.
Lupus and multiple sclerosis results when immune system: responds too strongly and attacks body's own tissues.
What happens in lupus and multiple sclerosis?MS and lupus are autoimmune diseases caused when immune system attacks their own normal tissues. Myelin coating of nerves is targeted in MS whereas skin, kidneys and other organs are affected in lupus.
Inflammation caused by lupus can affect different body systems including joints, skin, kidneys, blood cells, brain, heart and lungs.
It is very unlikely to have both MS and lupus but it's common for someone with MS to be incorrectly diagnosed with lupus because of common symptoms.
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back to alice and rob who did not win the genetic lottery. remember that rob has hemophilia and alice is a carrier. based on this unlucky genetic pairing, what could we say about the statistical chances of their sons inheriting or being carriers of the disease?
His sons will not have hemophilia, all of his daughters will be carriers. Hemophilia is carried on the x chromosome.
A girl has xx while a male has xy. The x chromosome is associated with the haemophilia characteristic. He would give his sons the y chromosome and his daughters the x chromosome.
The haemophilia gene is found on the x chromosome. Males only have one x chromosome, thus if that chromosome carries the haemophilia gene, they will become hemophilic. Women have two X chromosomes, and if one of them carries the haemophilia gene, they carry the illness but frequently don't exhibit symptoms.
The haemophilia gene is located on one of the two X chromosomes on a female carrier's two X chromosomes. She will pass on the illness to half of her boys, and she will pass it on to half of her daughters.
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Bradford Hill viewpoints or "criteria" for a causal relationship for this specific exposure and disease combination. (2 points each) For the toolhar nresc Al T+F1n rpria nr \( \triangle I T+E M \perp[
The Bradford Hill viewpoints or criteria can be used to evaluate the causality of an exposure-disease relationship. In brief, Hill’s criteria include strength, consistency, specificity, temporality, biological gradient, plausibility, coherence, experiment, and analogy.
For example, Hill's criteria could be applied to evaluate the association between a history of smoking and lung cancer. It is not necessary to fulfill all the criteria, but it is crucial to consider them when evaluating the association between an exposure and a disease.
Bradford Hill viewpoints or "criteria" for a causal relationship were proposed by the British epidemiologist Sir Austin Bradford Hill in 1965. These criteria provide a framework for evaluating the likelihood of a causal relationship between an exposure and a disease. They are often referred to as Hill’s criteria or Hill’s guidelines. These viewpoints have been widely adopted by epidemiologists as a tool for evaluating the causal relationship between exposure and disease.
According to Hill, there are nine different criteria that should be used when evaluating causality. These are strength, consistency, specificity, temporality, biological gradient, plausibility, coherence, experiment, and analogy. A brief explanation of these criteria is given below:
Strength: The strength of the association between the exposure and disease is one of the most important criteria. If the relationship is strong, then it is more likely to be causal. On the other hand, if the association is weak, it is less likely to be causal.
Consistency: If the same association is observed in different populations, then it is considered consistent. The more consistent the relationship, the more likely it is to be causal.
Specificity: The association between exposure and disease should be specific. A specific relationship implies that the exposure causes only one type of disease and no other.
Temporality: Temporality is the criterion that relates to the sequence of events. The exposure must precede the onset of the disease.
Biological gradient: The existence of a biological gradient is another important criterion. This means that there is a dose-response relationship between the exposure and the disease.
Plusibility: The association between the exposure and the disease should be biologically plausible.
Coherence: Coherence refers to the compatibility of the evidence with the current knowledge of the natural history and biology of the disease.
Experiment: If possible, the exposure should be manipulated to determine whether it causes the disease.
Analogy: Finally, the analogy criterion states that if there is a similar relationship between another exposure and disease, it is more likely that the relationship between the exposure and the disease under investigation is causal.
Bradford Hill viewpoints or "criteria" for a causal relationship are widely used by epidemiologists as a tool for evaluating the causal relationship between exposure and disease. These criteria provide a framework for evaluating the likelihood of a causal relationship between an exposure and a disease.
Hill's criteria include strength, consistency, specificity, temporality, biological gradient, plausibility, coherence, experiment, and analogy. It is not necessary to fulfill all the criteria, but it is crucial to consider them when evaluating the association between an exposure and a disease.
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A man with a CRC mutation that results in the synthesis of HSP110ΔE9 and a woman that does not carry this mutation in any of her tissues have a child. What is the percent chance that the child will inherit the CRC mutation?
A) 0%
B) 25%
C) 50%
D) 100%
The correct answer is either 0% or 50%, depending on the mode of inheritance. Without additional information, it is not possible to determine the correct answer.
If the CRC mutation is inherited in an autosomal dominant manner, meaning that one copy of the mutated gene is sufficient to cause the disease, the child would have a 50% chance of inheriting the mutation if the father carries one copy of the mutated gene.
If the CRC mutation is inherited in an autosomal recessive manner, meaning that two copies of the mutated gene are necessary to cause the disease, the child would not inherit the mutation unless both parents are carriers.
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if a cell with the genotype of f'lar /lar was digested and ran on a gel, what would you predict the banding fragment pattern to look like?
Answer:
.
Explanation:
2. What is the key function of RNA?
Anaerobic mesophiles are the first microorganisms to grow in the microbial succession in a compost pile. Group of answer choices True False
The given statement "Anaerobic mesophiles are the first microorganisms to grow in the microbial succession in a compost pile" is false because While anaerobic bacteria do play a role in the composting process, they are not the first microorganisms to colonize the pile.
The first microorganisms to colonize a compost pile are typically aerobic bacteria and fungi. These microorganisms are able to break down complex organic matter into simpler compounds such as sugars and amino acids. As the composting process progresses, other microorganisms such as actinomycetes and thermophiles become more dominant.
Anaerobic bacteria do play a role in the later stages of composting, as they are able to break down more recalcitrant organic matter that is resistant to the activities of aerobic bacteria and fungi. However, they are not the first microorganisms to colonize the pile.
Overall, the composting process is a dynamic and complex process that involves the sequential activity of a wide range of microorganisms. While anaerobic bacteria are an important component of this process, they are not the first microorganisms to colonize a compost pile.
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If you are going to allow a population of mice to randomly mate for 5 generations and you want to limit inbreeding to a maximum of 14.678481% after generation 5 (assuming you started with zero inbreeding), how many males do you need if you have 20 females?
a) 5
b) 10
c) 50
d) 2
e) 8
The answer is (b) 10. To limit inbreeding to a maximum of 14.678481% after 5 generations, we need to calculate the expected amount of inbreeding in each generation and then adjust the number of males to add to the population accordingly.
The expected amount of inbreeding in each generation can be calculated using the formula:
Expected inbreeding = (1 - (1/2)^(generation/2)) * (1 - (1/2)^(generation/2)^2) * ... * (1 - (1/2)^(generation/2)^(14))
Substituting the value of generation=5 gives:
Expected inbreeding = (1 - (1/2)^5) * (1 - (1/2)^5)^2 * ... * (1 - (1/2)^5)^(14)
= 0.81924005762932
The maximum amount of inbreeding allowed is 14.678481%. Substituting this value gives:
Maximum inbreeding = 14.678481 / 0.81924005762932
= 17.5937535396166
Therefore, to limit inbreeding to a maximum of 14.678481% after 5 generations, we need to add at least 17.5937535396166 males to the population.
Solving for the number of males needed if we have 20 females, we get:
17.5937535396166 = (20 * 1 - 14.678481) / 20
= 3.45344278981875
Rounding to the nearest whole number, we get:
The number of males needed is 3.
Therefore, the answer is (b) 10.
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Why did Mendel use pea plants in his experiments?
A.) They have no chromosomes.
B.) They are haploid organisms.
C.) They self-fertilize.
D.) They have no recessive traits.
Answer:
C.) They self-fertilize
Explanation:
Mendel used pea plants because they self fertilized, meaning that the plant could supply a sperm and egg cell so it could produce its own offspring. This makes the process of looking at genetics and traits much easier for the scientist studying the genes of plants.
Which of the following is an example of genetic engineering? I need an answer PLZ due today
Group of answer choices
Blue food coloring is added to the water of a white flower, causing parts of the flower to turn blue
Trees in cold habitats must adapt to warmer conditions or face extinction as Earth's climate changes.
Pollen from one type of flower is carried by the wind to another type of flower, resulting in a crossbreed.
A farmer takes pollen from a plant with desired traits and intentionally places the pollen on a plant with other desired traits.
Answer:
anges.
Pollen from one type of flower is carried by the wind to another type of flower, resulting in a crossbreed
Answer:
The last answer would be considered to be genetic engineering
Explanation:
What the farmer is doing is selective breeding by crossing a plant with desirable traits to another plant with other desirable traits so that the result would eventually display a combination of both features. This is manipulating the genetic makeup of the flower's offspring. Number two and three are naturally occurring. For the first one's case, it does not necessarily manipulate the object's genetic makeup. Hope this helps :) Soz if I'm wrong
Drag and drop the words or phrases that accurately complete the paragraph.
Florida's climate influences the weather, wildlife, and even human behavior. Around 75% of Floridians live on or near the . As a result, many of Florida's business industries revolve around resources. The largest industry in Florida, , relies heavily on the preservation of natural areas. In addition, natural wetlands, such as the Everglades, are essential for replenishing Florida's largest freshwater supply, the .
Everglades
Florida aquifer
land
agriculture
Lake Okeechobee
coastline
marine
tourism
Florida's climate influences the weather, wildlife, and even human behavior.
The climate of FloridaAround 75% of Floridians live on or near the coastline. As a result, many of Florida's business industries revolve around tourism.
The largest industry in Florida, tourism, relies heavily on the preservation of natural areas. In addition, natural wetlands, such as the Everglades, are essential for replenishing Florida's largest freshwater supply, the Florida aquifer.
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which of the following best describes the distinction between unconfined and confined aquifers (aka, fossil aquifers)?a. Confined aquifers can easily be overdrawn, whereas unconfined aquifers are less likely to be overexploited.b. Confined aquifers are less easily replenished by rainfall than are unconfined aquifers.c. Confined aquifers are unavailable for human use, whereas unconfined aquifers are available for use.
the distinction between unconfined and confined aquifers lies in their ability to be replenished and overdrawn. A confined aquifer is one that is surrounded by impermeable rock or sediment, which makes it more difficult for water to enter and exit the aquifer. On the other hand, an unconfined aquifer is not surrounded by impermeable materials, so it is more easily replenished by rainfall and is less likely to be overexploited involves the permeability of the surrounding rock and sediment, the ability for water to enter and exit the aquifer, and the potential for overexploitation.
b. Confined aquifers are less easily replenished by rainfall than are unconfined aquifers. Confined aquifers are underground layers of permeable rock or sediment that are bounded by layers of impermeable material, preventing water from easily flowing in or out. This makes confined aquifers less easily replenished by rainfall. On the other hand, unconfined aquifers have no confining layers, allowing them to be more directly connected with the surface and more easily replenished by rainfall.
the main distinction between unconfined and confined aquifers is that confined aquifers are less easily replenished by rainfall, while unconfined aquifers can be more readily replenished due to their direct connection with the surface.
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part a during mendel's lifetime most people believed in the blending theory of inheritance which said that offspring were a blend of their parents traits. mendel's systematic crosses allowed him to replace the blending theory with the particulate theory of inheritance which says that traits are passed on because discrete units of inheritance, we now call genes, are passed on. in the twentieth century the discovery of what type of inheritance initially seems to support the blending theory in the f1 generation of a cross, but then disproves the blending theory and supports mendel's particulate theory in the f2 generation when some individuals exhibit the original parental phenotypes? during mendel's lifetime most people believed in the blending theory of inheritance which said that offspring were a blend of their parents traits. mendel's systematic crosses allowed him to replace the blending theory with the particulate theory of inheritance which says that traits are passed on because discrete units of inheritance, we now call genes, are passed on. in the twentieth century the discovery of what type of inheritance initially seems to support the blending theory in the f1 generation of a cross, but then disproves the blending theory and supports mendel's particulate theory in the f2 generation when some individuals exhibit the original parental phenotypes? the discovery that there can be more than 2 alleles for a gene. the discovery that one gene can produce many different proteins. the discovery of incomplete dominance
An old biological notion from the 19th century is called blending inheritance. According to the hypothesis, a kid receives a trait by averaging the values of its parents for that trait.
As an illustration, pink-flowered children might result from breeding a red flower variation with a white variant of the same species. Inheritance was blended according to Charles Darwin's idea of inheritance via pangenesis, which included contributions to egg or sperm from every organ of the body.
Fleeming Jenkin attacked Darwin's theory of natural selection because of his dependence on this mechanism, arguing that blending inheritance would average out any unexpected advantageous property before selection had a chance to work.
The widespread acceptance of particulate inheritance led to the rejection of blending inheritance.
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The reactants for cellular respiration area. glucose and ATP.b. water and ATP.c. oxygen and ATP.d. glucose and oxygen.e. carbon dioxide and glucose.
Cellular respiration is a very important process for organisms because it is from it that part of the energy necessary for survival is generated.
In respiration, we consume oxygen and glucose and form carbon dioxide, energy, and water as products.
Therefore, we can say that the reactants of cellular respiration are oxygen and glucose. Therefore, option "D" is the answer.
A female mouse is trying to decide if she will leave her natal nest to reproduce alone. If she leaves, she will be able to produce 45 offspring whereas she would only have 7 reproductive units if she stayed. But if she stays, she will help her mother produce 175 offspring vs the 85 she could produce without her. Should she stay
Answer:
142 is the answer whe you add 45 7 and 85
A female mouse is trying to decide if she will leave her natal nest to reproduce alone. She will produce 142 offspring.
What is reproduction?
Reproduction is the production of offspring. There are two main forms: sexual and asexual reproduction. In sexual reproduction, an organism combines the genetic information from each of its parents and is genetically unique.
In asexual reproduction, one parent copies itself to form a genetically identical offspring. Sea turtles are an example of an animal that reproduces sexually, a volvox (green algae) is an example of an organism that reproduces asexually, and a brittle star can reproduce in either way.
Reproduction is the process by which new organisms (offsprings) are produced from organisms of the same kind.
Therefore, A female mouse is trying to decide if she will leave her natal nest to reproduce alone. She will produce 142 offspring.
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Which statement best describes how Sweden discovered there had been a nuclear accident at Chernobyl?
O Experts measured the amount of force in the explosions.
Rescuers helped evacuate people from the surrounding areas.
O Geographers created the exclusion zone around the power station.
O Scientists detected high levels of radiation in the wind.
The statement "Scientists detected high levels of radiation in the wind" best describes how Sweden discovered there had been a nuclear accident at Chernobyl.
In April 1986, when the Chernobyl nuclear disaster occurred, radioactive particles were released into the atmosphere and carried by the wind. Sweden was one of the first countries to detect the radiation, as the particles were detected in the air above Sweden, triggering alarms in nuclear power plants in the country.
Swedish scientists then traced the source of the radiation to Chernobyl and alerted the rest of the world about the disaster.
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Why is evoultion considered a theory
Answer:
A scientific theory is a well-substantiated explanation of such facts. The facts of evolution come from observational evidence of current processes, from imperfections in organisms recording historical common descent, and from transitions in the fossil record. Theories of evolution provide a provisional explanation for these facts
Explanation:
Explain the process of evolution through isolation
that results in speciation.
Answer:
Speciation is the process of formation of a new genetically independent group of organisms, called species, through the course of evolution. The process of splitting of genetically homogenous population into two or more populations that undergo genetic differentiation and eventual reproductive isolation is called speciation.
Answer:
Explanation:
Evolution is a natural phenomenon by which inheritable characteristics of a species change over generations. It mainly relies on processes such as natural selection, genetic drift, migration, and mutation. ... Isolation (geographical or reproductive) prevent the flow of genetic material between the populations.
How are cohesive and adhesive forces involved in transport of water?
The water molecules are held together and preserve their stability thanks to the cohesive forces that exist between them. The water molecules are assisted by the adhesive forces to adhere to other surfaces .
Cohesion is the quality of attraction between molecules of the same kind, and the forces that exist between them are known as cohesive forces. Adhesion is the quality of attraction between molecules of two dissimilar types, and the forces that exist between them are known as adhesive forces. The water molecules are held together and preserve their stability thanks to the cohesive forces that exist between them. The water molecules are assisted by the adhesive forces to adhere to other surfaces . These surfaces allow the water molecules to adhere, preventing runoff. By preserving equilibrium between the water molecules, external surfaces, and the environment, these two forces work together to facilitate the surface tension process.
Hence, combination these forces responsible for fluid properties.
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1.
In which order is energy transferred through a food chain?
A. Sun → plants → animals
B. Sun animals → plants
C. plants - Sun animals
nlants animals - Sun
D
Answer:
It is A
since the energy source is the first thing you need to make the planet habitable, and in order for the animals to live, you need plants like trees to give air. so the cycle is Sun-Plant-Animal
Organelles are found in...
A. the blood stream of complex organisms.
B. inside most cells.
C. constantly moving between cells.
Answer:it’s C
Explanation: