The Chihuahuan Desert of the United States and Mexico may be the most biologically diverse desert
in the world. Extensive grazing has caused the flora and soil of this ecosystem to become unstable.
How has biodiversity affected the sustainability of this ecosystem?
A Biodiversity has put this ecosystem at risk of being less sustainable in the future.
B Biodiversity has not changed this ecosystem's level of sustainability
C Biodiversity has prevented this ecosystem from being sustainable.
D Biodiversity has helped this ecosystem remain sustainable.
OA
OB
OD
Answers
Answer: C Biodiversity has prevented this ecosystem from being sustainable.
Explanation:
The extensive grazing by the organisms in the Chihuahuan Desert which has made the ecosystem unstable has made the ecosystem incapable of sustaining the organisms that depend on it.
This is because the extensive grazing means that the ecosystem in the desert which comprises of the flora has seen its resources being overused and can now no longer support the organisms in it.
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PLZ ANSWER!!! I NEED HELP LIKE ASAP!!!
Answers
Answer:
I believe the answer is B
Explanation:
What are two ways in which the geosphere is interacting with the hydrosphere in this river?
Answers
erosion and weathering
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1. The ______________ is often referred to as the powerhouse of the cell since it is where sugar is used to generate energy.
2. The __________ of a plant cell are where the photosynthesis takes place.
3. What is the difference between a cell wall or a cell membrane?
This may help whoever answers the question. These questions are from a video. Here is the link: https://www.generationgenius.com/videolessons/plant-and-animal-cells-video-for-kids/?share-link=4B2A8
Answers
Answer:
1. Mitochondria
2. Chloroplasts
3. Cell wall is rigid outer layer providing strength and support, found in plant cells, whereas the cell membrane has a more functional role in communication and cell responses, as well as substance exchange
Blood types: The blood type O negative is calied the "universal donor" type, because it is the only biood type that may safely be transfused into any person. Therefore, when someone needs a transfusion in an emergency and their blood type cannot be determined, they are given type o negative blood. For this reason, donors with this bloed type are crucial to blood banks. Unfortunately, this blood type is fairly rare; according to the Red Cross, onily 7 if or U.S. residents have type 0 negative blood. Assume that a blood bank has recruited 24 donors. Part 1 of 2 (a) What is the mean number of donors who have type 0 negative blood? Round the answer to two decimal places. The mean number of donors who have type O negative blood is Part 2 of: 2 (b) What is the standard deviation of the number of donors who have fype o negative blood? Round the answer to four decinal places: The standard deviatien of the number of donoes who Nave type o negative blood is
Answers
(a) Mean number of donors who have type O negative blood Mean of a population (μ) is found by adding up all the values and dividing by the number of values. So, the formula for calculating the mean of a population is:
mu=1Nsum_i=1^N x_where mu is the population mean, N is the number of values in the population, x_i is the ith value in the population.Using the given data in the question, we can compute the mean of donors who have type O negative blood:mu=24cdot 0.07 1 =1.68 Hence, the mean number of donors who have type O negative blood is 1.68. (rounded to two decimal places)(b) Standard deviation of the number of donors who have type O negative blood:Standard deviation is a measure of how much the data in a set is spread out. It is given by the formula:
sigma=i=1^N(x_i-mu)^2 Nwhere sigma is the standard deviation, mu is the mean, x_i is the ith value in the set, and N is the number of values in the set.Using the given data in the question, we can compute the standard deviation of donors who have type O negative blood:sigma=24 cdot 0.07 cdot (1-0.07)) 1=0.4652 Hence, the standard deviation of the number of donors who have type O negative blood is 0.4652. (rounded to four decimal places)About O Negative bloodO negative blood is the type most commonly used for transfusions when the patient's blood type is unknown. The O negative group is most often used in emergency cases, trauma, surgery, because this type is universal. However, O negative blood group can only receive O negative blood. O blood group is divided into two types Blood type O that has the rhesus antigen is called blood type O positive. Blood type O that does not have the rhesus antigen is called blood type O negative.
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what best describes a tetrad
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Answer:
The tetrad is the four spores produced after meiosis of a yeast or other Ascomycota, Chlamydomonas or other alga, or a plant.
A(n) _______ is a body of saturated rock or sediment through which water can move easily.
A. sediment
B. evaporite
C. caprock
D. aquifer
E. aquiclud
Answers
Answer: D
Explanation: An aquifer is a body of saturated rock through which water can easily move.
which of the following makes possible the differentiation of members of the genus mycobacterium and the genus nocardia from other bacteria? multiple choice the gram stain the presence of flagella the acid-fast stain an endospore stain the capsule stain
Answers
The correct answer is the acid-fast stain. The acid-fast staining procedure is used to identify bacteria with a high concentration of mycolic acid in their cell walls, making them resistant to the traditional Gram staining procedure.
Where is mycobacterium found?Mycobacteria are a group of bacteria that can be found in various environments. Some of the most well-known mycobacteria are pathogenic and can cause diseases such as tuberculosis and leprosy.
How can mycobacterium affect a human?Mycobacterial infections are usually spread by inhaling droplets containing the bacteria or through contact with infected animals or contaminated soil or water. Treatment usually involves antibiotics and may require several months or more of therapy, depending on the severity of the infection.
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A carbohydrate composed of two covalently-bonded simple sugars (monosaccharides) is called a(n)?
Answers
A carbohydrate composed of two covalently bonded simple sugars is called a disaccharide.
Carbohydrates or sugars are one of the four main categories of the macromolecules that make up living things (the other three being nucleic acids, proteins and lipids). It can either be a simple sugar (sugar monomer or monosaccharide) or a polymer of simple sugars.
Carbohydrates are composed entirely of carbon, oxygen and hydrogen atoms. Simple sugars or monosaccharides contain six carbon atoms, twelve hydrogen atoms and six oxygen atoms. When two monosaccharides bond covalently, they form a disaccharide.
Some examples of disaccharides include:
Sucrose or table sugar - It is made up of one glucose molecule and one fructose moleculeLactose or milk sugar - It is made up of one glucose and one galactose moleculeMaltose or malt sugar - It is made up of two glucose molecules.Learn more about carbohydrates here:
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fill in the blank. ____synthetic substances that are similar to male sex hormones.
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Anabolic steroids are synthetic substances that are similar to male sex hormones. The main male sex hormone, testosterone, is artificially converted into anabolic steroids.
These artificial substances are made to replicate the physiological effects of testosterone, which boost strength, promote muscular development, and enhances athletic performance.
Anabolic steroids are frequently utilized in medical treatments for ailments such as hormone imbalances, disorders that cause muscular atrophy, and delayed puberty.
Nonetheless, despite the dangers and probable negative consequences, sportsmen and bodybuilders routinely abuse them to improve their physical performance and attractiveness.
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anabolic steroids are synthetic substances that are similar to male sex hormones. They are used to enhance athletic performance and promote muscle growth. However, their use can have serious side effects and is illegal for non-medical purposes.
anabolic steroids are synthetic substances that are similar to male sex hormones. They are artificially produced compounds that mimic the effects of testosterone, the primary male sex hormone. These substances are commonly used to enhance athletic performance and promote muscle growth.
Anabolic steroids can be taken orally or injected into the body. Once in the body, they increase protein synthesis within cells, leading to an increase in muscle mass and strength. This is why they are often used by athletes and bodybuilders.
However, the use of anabolic steroids can have serious side effects. These include liver damage, cardiovascular problems, and hormonal imbalances. It is important to note that the use of anabolic steroids for non-medical purposes is illegal in many countries.
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The macromolecule pictured above could be apart of which of the following?
Answers
The macromolecule pictured above is Fat. Option B is correct.
Fats are composed of glycerol, a type of monomer, and fatty acid, another type of monomer. Fat acts as an insulator, a cushion, and a permanent energy source for living things. Fats are also the building blocks of cell membranes and are used to store vitamins, filter toxins, and synthesize hormones.
Types of lipids include triglyceride, phospholipid, and sterol. In this article, we’ll look at the structure of these three lipids, how they work in the body, and where they are found in food.
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1. Name 5 simple crochet stiches.
Answers
Explanation:
Single Crochet Stitch.
Double Crochet Stitch.
Half Double Crochet Stitch.
Treble Crochet Stitch.
Slip Stitch Crochet.
Half double crochet
Double crochet
Single crochet
Chain stitch
1) The percentage of whole blood occupied by red blood cells is
the
A. pH. B. erythrocyte count. C. differential cell count.
D. hematocrit. E. specific gravity. F. total hemoglobin
2) A mountain climb
Answers
1) The percentage of whole blood occupied by red blood cells is hematocrit. Hence, option (D) is the correct choice.
Hematocrit (Hct) is the percentage of whole blood occupied by red blood cells. Hematocrit is commonly expressed as a percentage by volume (i.e., the volume of red blood cells divided by the total volume of blood).
2) A mountain climb of 1500 m would decrease the PO2 of inspired air from 150 to 108 mm Hg.
The PO2 (partial pressure of oxygen) of the atmosphere decreases with increasing altitude, resulting in less oxygen available to breathe. The decrease in PO2 with altitude causes a decline in the oxygen saturation of the blood. When oxygen saturation decreases, the body must work harder to provide enough oxygen to meet its metabolic demands.
At sea level, the PO2 of inspired air is about 150 mm Hg. If a mountain climb reaches an altitude of 1500 m, the PO2 of inspired air would decrease to approximately 108 mm Hg. This drop in PO2 can cause altitude sickness and other physiological changes that affect athletic performance.
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need help plzz asap... will give brainliest if you get it right...
Answers
Answer:B the second one
Explanation:
What is taste os lemon juices?Which part of the tongue can detect this taste
Answers
The taste of lemon juice is sour. The part of the tongue that can detect this taste is the sides of the tongue, specifically the areas near the back of the tongue.
The sour taste is detected by taste buds that contain receptors for sourness, which are called type III cells. These cells are activated by the presence of acids, such as citric acid in lemon juice.
When the acid molecules bind to the receptors on the taste buds, they generate a neural signal that is transmitted to the brain, where it is interpreted as sourness.
The sensitivity to sour taste varies among individuals, but in general, the sour taste of lemon juice is detected by the taste buds on the sides of the tongue.
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Why is the fatty acid of the lipids often reffered to as a hydrocarbon chain?
Answers
Answer:
The chain includes hydrogen and carbon.
Explanation:
They all have a central carbon atom with four components around it.
Hope this helps!!
give an explanation about the importance of these processes (photosynthesis and cellular respiration) in cycling nutrients through the ecosystem of the earth
Answers
Answer: because it is
Explanation:
right?
What does sub cellular structure mean?
Answers
Answer:
Sub-cellular structures are basically specific structures that take on specific tasks within the cell
Explanation:
The peppered moth provides a well-known example of natural selection. The light-colored form of the moth was predominant in England before the Industrial Revolution. In the mid-nineteenth century, a dark-colored form appeared. The difference is produced by a dominant allele of one gene. By about 1900, approximately 90% of the moths around industrial areas were dark colored, whereas light-colored moths were still abundant elsewhere. Apparently, birds could really find the light morhs against the soot-darkened background in industrial areas and, therefore, were eating more light moths. Recently, use of cleaner fuels has greatly reduced soot in the landscape, and the dark-colored moths have been disappearing.
1.What forces are causing evolutionary change in these populations?
2. Should the two forma be considered separate species?
3. How would you determine if these are separate species?
4. Give a prediction for what future generations of moths will look like and explain why.
Answers
Answer:
a) Natural selection
b) Different
c) Different genotypes
d) Evolution of dark colored moth species from the light colored moth species
Explanation:
a) The pressure of selection due to the changing color of bark of tree because of air pollution caused by industries leads to natural selection in a way that dark colored moth are emerging
b) Yes the two forms of moths are two different species.
c) The genotype of the two species is different
d) All the moths will be of dark color in order to save themselves from predation. This will lead to evolution of dark colored moth species from the light colored moth species and hence will lead to extinction of light colored moth
a new mutation arises in a population. which of the following is not a possible fate of this mutation? select all that apply group of answer choices whether it is beneficial or not, the mutation may become fixed in the population because of genetic drift, especially if the population is small if the mutation is beneficial, it may increase in the population due to natural selection through gene flow, the mutated allele may be transferred to other populations the mutation may be removed from the population if the mutation reduces life expectancy and/or reproductive output
Answers
A new mutation arises in a population. The following is not a possible fate of a new mutation is e. the mutation may be removed from the population if the mutation reduces life expectancy and/or reproductive output.
Mutations refer to any change in the genetic makeup of an organism then new mutations may arise as a result of various factors, including natural selection, genetic drift, and gene flow. While genetic drift is a random change in the frequency of alleles in a population. This phenomenon occurs when small populations are isolated from each other, resulting in random fluctuations in allele frequency that are not affected by natural selection. Gene flow refers to the transfer of alleles or genes from one population to another, this can occur as a result of migration or interbreeding between populations. Gene flow can result in new genetic combinations, increasing genetic diversity within a population.
Natural selection is a process by which certain traits become more or less common in a population over time. This process occurs when individuals with certain traits are more likely to survive and reproduce than others. Over time, these traits become more common in the population, resulting in changes in the genetic makeup of the population. Natural selection can result in the spread of beneficial mutations throughout a population. So, the following is not a possible fate of a new mutation is the mutation may be removed from the population if the mutation reduces life expectancy and/or reproductive output.
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An investigation is an example of
A. Bias
B. Pseudoscience
C. Inquiry
D. The scientific method
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An investigation is an example of
\(\sf\purple{D. \:The\: scientific\: method .}\)
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Vaccines are
1 point
cures for pathogens
prevent pathogen infection
used to treat a bacterial infection
100% effective
Answers
Answer:
To prevent a pathogen infection
16. Describe the process of dune formation and colonization by plants: Name some of the plant species we would expect to see from those closest to the beaches & as we moved through the dunes on a barrier island on the Georgia Coast, and indicate where they would be found (which of the portion of the successional stages? You need at least 3 different portions of the dune community/stages of dune formation and 1-2 plants per area/subcommunity) What type of succession is this?
Answers
Dunes form from sediment deposition on the beach in response to wind and ocean currents. When sand grains are transported by the wind, they settle on the leeward slope and accumulate over time to form dunes. Dunes start as embryonic foredunes and develop into mature and stabilized sand dunes as a result of plant colonization.
The formation of dunes is a result of a process called dune building. Sand dunes on barrier islands are formed in successive stages. The first stage is the embryonic stage where the sand dunes begin to form. The second stage is the foredune stage where sand dunes form close to the beach. The third stage is the backdune stage where sand dunes are farther from the beach and the vegetation has grown more.
The last stage is the climax stage where the sand dunes have reached their final height and the vegetation is at its fullest. There are various plant species that can be seen as one moves through the dunes on a barrier island on the Georgia Coast. These include: Beach morning glory (Ipomoea pes-caprae) on the foredune in the embryonic stageSea oats (Uniola paniculata) and sea rocket (Cakile edentula) on the foredune in the foredune stageSouthern live oak (Quercus virginiana), yaupon holly (Ilex vomitoria), and American beachgrass (Ammophila breviligulata) in the backdune in the backdune stage Saltmeadow cordgrass (Spartina patens) and marsh elder (Iva frutescens) in the climax dunes in the climax stage.
This type of succession is known as primary succession, which is the development of plant communities in areas that have not previously supported life.
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Explain at least three ways population is controlled.
Answers
Answer:
Population control may involve culling, translocation, or manipulation of the reproductive capability
Answer:
Population control may involve culling, translocation, or manipulation of the reproductive capability
Explanation:
Help? You are studying an outcrop where the lower layer is limestone and the layer directly on top of the limestone is sandstone. Near the bottom of the sandstone layer are small, weathered pieces of limestone entirely contained within the sandstone. Explain how these pieces of limestone came to be contained within the sandstone.
Answers
Answer:
Due to mixing of particles present in the upper layer of limestone with sandstone during deposition.
Explanation:
The parent layer was limestone layer which is older than sandstone layer. This sandstone layer spreads on the limestone layer because of wind. The wind moves these sandstone from other region and their deposition occurs on the limestone layer. During deposition of sandstone, some particles of limestone which are present at the surface mixes with the sandstone so that's why in sandstone layer, small and weathered pieces of limestone are present.
hello please help i’ll give brainliest
Answers
Answer:
b
Explanation:
interaction between two different organisms living in close physical association, typically to the advantage of both.
According to decay theory, why does forgetting occur? Select one: a. because of the deterioration of the nervous system with increasing age.
b. because of competition from other memories
c. because of ineffective encoding of information.
d. because of the passage of time.
Which of the following is reflected in Sigmund Freud's concept of repression? Select one: a. ineffective encoding b. interference
c. decay d. retrieval failure
Answers
According to decay theory, forgetting occurs because of the passage of time.
Sigmund Freud's concept of repression reflects the idea of retrieval failure.
Forgetting is a common phenomenon in human memory, and decay theory suggests that it happens due to the natural fading or weakening of memories over time. When information is encoded into our memory, it creates neural connections and pathways in the brain. However, these connections can gradually weaken or decay if they are not reinforced or accessed frequently.
The main idea behind decay theory is that memories that are not regularly reinforced or retrieved may gradually decay, becoming more difficult to retrieve accurately. This decay occurs at the neural level, as the connections between neurons weaken over time, making the memory traces less effective in retrieving the information. As a result, memories that are not actively maintained through rehearsal or retrieval can become less accessible and eventually fade away.
Repression is a concept introduced by Sigmund Freud in psychoanalytic theory, and it refers to the unconscious blocking of traumatic or distressing memories from conscious awareness. According to Freud, individuals may repress memories that are too threatening or painful to consciously remember, pushing them into the unconscious mind.
Repression aligns with the concept of retrieval failure because the memories that have been repressed are not readily accessible to conscious retrieval. While the memories may still exist in the unconscious, they are effectively blocked or "forgotten" from the conscious awareness.
When attempts are made to retrieve repressed memories, they may remain inaccessible due to the psychological defense mechanism of repression. These memories are effectively "hidden" from conscious recall, making retrieval difficult or even impossible without specialized therapeutic techniques.
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in the end times, 1 But mark this: There will be terrible times in the last days. 2 People will be lovers of themselves, lovers of money, boastful, proud, abusive, disobedient to their parents, ungrateful, unholy, 3 without love, unforgiving, slanderous, without self-control, brutal, not lovers of the good, 4 treacherous, rash, conceited, lovers of pleasure rather than lovers of God- 5 having a form of godliness but denying its power. Have nothing to do with such people. 6 They are the kind who worm their way into homes and gain control over gullible women, who are loaded down with sins and are swayed by all kinds of evil desires, 7 always learning but never able to come to a knowledge of the truth. 8 Just as Jannes and Jambres opposed Moses, so also these teachers oppose the truth. They are men of depraved minds, who, as far as the faith is concerned, are rejected. 9 But they will not get very far because, as in the case of those men, their folly will be clear to everyone. 2 Timothy 3
Answers
Answer:
"The time in which we now live. The days (or dispensation of time) just before the Second Coming of the Lord.
I tell you what shall befall you in the last days, Gen. 49:1.
The Redeemer shall stand at the latter day upon the earth, Job 19:25.
In the last days, the Lord’s house shall be established, Isa. 2:2.
In the last days perilous times shall come, 2 Tim. 3:1–7.
Latter-day scoffers shall deny the Second Coming, 2 Pet. 3:3–7.
I prophesy unto you concerning the last days, 2 Ne. 26:14–30.
Thus shall my church be called in the last days, even The Church of Jesus Christ of Latter-day Saints,"-The Church of Jesus Crist of Latter-day Saints
Explanation:
How has the aphid experiment been used in conjunction with radioactive isotopes to find phloem transport speed?
Answers
The aphid experiment has been used in conjunction with radioactive isotopes to find phloem transport speed by using the radioactive isotopes as tracers to track the movement of nutrients through the plant.
In the experiment, the plant is injected with a radioactive isotope, and then an aphid is allowed to feed on the plant. As the aphid feeds on the plant's phloem, it ingests the radioactive isotope along with the plant's nutrients. By measuring the amount of radioactivity in the aphid's body at different time intervals, researchers can determine the speed at which the phloem is transporting nutrients through the plant. This technique has been used in various studies to understand the dynamics of phloem transport in plants.
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which of the following types of societies impacts the environment the greatest?
a.) hunter/gatherer
b.) nomadic
c.) agricultural
d.) industrial
Answers
The types of societies that impacts the environment greatest is industrial.The correct option is D
What is societies?Society is defined as a group of people who live in a definable community and share the same cultural components.
Characteristics of Society are:
Population: A society must have population without a group of people no society could be formed.Society is Abstract: Society is an abstract concept. Society is Dynamic: The very nature of society is dynamic and changeable.Therefore, the ultimate goal of society is to promote good and happy life for its ndividualsi. It creates conditions and opportunities for the all round development of individual personality.
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An you identify the sequence of events in meiosis ii? to review meiosis ii, watch this bioflix animatio
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The sequence of events in Meiosis II includes prophase II, metaphase II, anaphase II, and telophase II, resulting in the production of four haploid daughter cells.
In Meiosis II, prophase II involves the breakdown of the nuclear envelope and condensation of chromosomes into sister chromatids. Metaphase II follows, where the chromosomes align at the metaphase plate. Spindle fibers attach to the sister chromatids at their centromeres.
During anaphase II, the sister chromatids separate and move to opposite poles of the cell. Finally, in telophase II, the nuclear envelope reforms around the chromosomes, and cytokinesis occurs, resulting in the division of the cytoplasm. As a result, four haploid daughter cells are produced, each containing half the number of chromosomes as the parent cell.
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Can you identify the sequence of events in Meiosis II? For a comprehensive understanding of Meiosis II