She always prepared food.(Yes/No question)​

Answer:

The correct answer is They receive instructions in their DNA

Explanation:

I took the Test

Answer:

A-They allow scientists to make predictions

Explanation:

Scientific models aid scientists in performing experiments by allowing them to better understand their subject. This rules out B. C and D simply do not make sense, as all good experiments should generally use data to prove the validity of their points and there’s no real way to prevent criticism. Hope it helps :)

True fossil science varies from its depiction in motion pictures in more than one way

First of all, excavations are more laborious, take a long time, and involve delicate tools and methods than they are rapid and dramatic discoveries. Paleontologists frequently devote years to a single location.

Second, complete dinosaur skeletons are uncommon, and the majority of discoveries consist of fragments. Movies usually show specimens that are perfectly preserved.

Additionally, paleontologists place a strong emphasis on scientific collaboration and careful analysis, whereas movies frequently depict lone heroes. In point of fact, paleontologists collaborate in teams, publish their findings, and invite peer review of those findings.

Finally, whereas movies frequently depict groundbreaking discoveries that transform our understanding in an instant, paleontological research advances gradually and builds on previous knowledge. In contrast to how it is sensationalized in movies, real-world paleontology is a patient, meticulous, and collaborative scientific field.

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Answer:

Periosteum, Compact Bone, Spongy Bone, Bone Marrow, Articular Cartilage, Medullary Cavity

Explanation:

Periosteum: The outermost layer of a bone is called the periosteum. It is a tough, fibrous membrane that covers the bone's surface. The periosteum contains blood vessels, nerves, and connective tissue that nourish and support the bone.

Compact Bone: Beneath the periosteum lies a layer of compact bone, also known as cortical bone. Compact bone is dense and hard. It forms the main shaft or diaphysis of the long bone. Its structure consists of multiple layers of tightly packed mineralized matrix called lamellae, which contain collagen fibers. Compact bone provides strength and protection to the bone.

Spongy Bone: The interior of the bone, particularly at the ends and in the middle of long bones, contains spongy bone, also called cancellous or trabecular bone. Spongy bone has a porous, lattice-like structure composed of thin, branching bony plates called trabeculae. The spaces between the trabeculae are filled with bone marrow. Spongy bone helps reduce the weight of the bone while providing support and flexibility.

Bone Marrow: Within the spaces of spongy bone is bone marrow. There are two types of bone marrow: red marrow and yellow marrow. Red marrow is responsible for producing blood cells, including red blood cells, white blood cells, and platelets. Yellow marrow consists mainly of fat cells and serves as a storage site for adipose tissue.

Articular Cartilage: At the ends of long bones, where they articulate with other bones in joints, there is a layer of smooth, slippery cartilage called articular cartilage. It helps reduce friction and absorbs shock during movement, facilitating smooth joint motion.

Medullary Cavity: Within the diaphysis or shaft of the long bone, there is a hollow space called the medullary cavity. The medullary cavity contains bone marrow and serves as a storage site for yellow marrow.

Answer:

Enzymes work consistently until they are dissolved, or become denatured. When enzymes denature, they are no longer active and cannot function. Extreme temperature and the wrong levels of pH -- a measure of a substance's acidity or alkalinity -- can cause enzymes to become denatured.

The possible explanations for the apparent association in this case-control study are selection bias, information bias, and confounding.

Selection bias occurs when there is a systematic difference in the selection of cases and controls that is related to both the exposure and the outcome. It can distort the true association between the exposure and the outcome.

Information bias refers to errors or inaccuracies in the measurement or collection of data. It can arise from issues such as recall bias, misclassification of exposure or outcome, or errors in data collection methods. Information bias can lead to a distorted association between the exposure and the outcome.

Confounding occurs when an extraneous factor is associated with both the exposure and the outcome and influences the observed association. It can introduce a spurious association or mask a true association between the exposure and the outcome.

Investigator error, while a potential source of bias, is not specifically mentioned in the options and is not among the provided choices.

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Complete question

Now that you have calculated various measures of association from this case-control study, what are the other possible explanations for the apparent association? Select all that apply.

a) selection bias

b) information bias

c)confounding

d)investigator error

e) none of the above

Humans are hurting the environment more than helping it due to their reckless and careless actions. The environment has been adversely impacted by air and water pollution, deforestation, climate change, and other human activities.

I have seen firsthand the damage that littering and pollution can cause to natural habitats. We must take responsibility for our actions and make a concerted effort to protect and preserve our environment for future generations.

Humans are both hurting and helping the environment. On one hand, human activities like deforestation, pollution, and overconsumption of resources have led to habitat destruction, loss of biodiversity, and climate change. These negative impacts are evident in the increasing number of species extinctions and the degradation of ecosystems. On the other hand, humans have also made efforts to mitigate these issues by promoting sustainable practices, conservation efforts, and the development of renewable energy sources. Initiatives such as reforestation, wildlife conservation programs, and the transition to clean technologies are examples of how humans are actively working towards a more sustainable future. Overall, it's a complex situation with both positive and negative impacts, but the key lies in taking collective action to minimize our negative effects and promote sustainable practices.

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In the polymerase chain reaction (PCR), starting with one double-stranded DNA molecule and assuming perfect efficiency, after four PCR cycles, the number of double-stranded DNA molecules would be 16.

PCR is a widely used technique for amplifying specific DNA sequences. Each PCR cycle involves denaturation of the DNA template, primer annealing, and extension by DNA polymerase. During the first cycle, the initial DNA molecule is duplicated, resulting in two molecules. In the second cycle, each of the two molecules is duplicated, yielding a total of four molecules. This doubling continues with each subsequent cycle, so by the fourth cycle, there would be 16 double-stranded DNA molecules. It's important to note that these calculations assume ideal conditions and perfect efficiency, which may not be achievable in practice due to various factors influencing PCR efficiency.

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Answer:

The Human Immune system helps fight bacteria and germs and viruses because without the Immune system we could die it is what protects us from The flu and sometimes cov id with a weak immune system we might no survive.

Explanation:

Answer:

hmmmm check my explanation

Explanation:

it my be from many different mishaps

such as tsunamis, earthquakes, volcanic eruptions and more

Answer:

The amount of precipitation reduces by 20% over time. It will have an impact on the habitat because species that have adapted to drier climates will supplant those that are less suited to the new climate.

Explanation:

A microorganism that has been used in the production of sour mash whiskey is Lactobacillus bacteria.

In the production of sour mash whiskey, a portion of the spent mash (the leftover grains from a previous batch) is added to the new batch of mash along with water and cornmeal or other grains. This creates an acidic environment that is favorable to the growth of Lactobacillus bacteria. These bacteria produce lactic acid, which helps to control the growth of harmful microorganisms and contributes to the characteristic sour flavor of the whiskey. After the mash is fermented with yeast and distilled, the resulting whiskey is aged in oak barrels to develop its distinctive flavor and color.

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Answer:

Limestone

Explanation:

The most common chemical sedimentary rock, by far, is limestone. Others include chert, banded iron formation, and a variety of rocks that form when bodies of water evaporate. Biological processes are important in the formation of some chemical sedimentary rocks, especially limestone and chert.

Answer: Cell differentiation. Cellular differentiation is the process in which a stem cell alters from one type to a differentiated one. Usually, the cell changes to a more specialized type.

Explanation:

Answer:

I think that it would be; Population, Community, Ecosystem, Biomes, Biosphere.

Explanation:

Hope this helps!

Answer: protons

Explanation: atoms of each element contain a characteristic number of protons

Answer:

the answer is protons

Explanation: Atoms of each element contain a characteristic number of protons. In fact, the number of protons determines what atom we are looking at (e.g., all atoms with six protons are carbon atoms); the number of protons in an atom is called the atomic number. In contrast, the number of neutrons for a given element can vary.

Answer:

Thiobacillus denitrificans is a species of bacteria that get its energy from carbon dioxide and inorganic compounds such as nitrogen in its environment. It is used in bioremediation (natural cleansing) of groundwater that contains excess nitrate, allowing the nitrates to be removed.

hope this helped

please give brainlist

The denitrification process do thiobacillus denitrifications help bioremediate groundwater.

Denitrification is the microbial conversion of nitrate and nitrite to nitrogen gaseous forms, primarily nitrous oxide (N2O) and nitrogen dioxide (NO2) (N2). Denitrification can be accomplished by a wide range of microorganisms. Changes in the oxygen (O2) concentration in their immediate environment cause denitrification.

Thiobacillus denitrificans is a bacterial species that gets its energy from carbon dioxide and inorganic chemicals like nitrogen in its surroundings. It is utilized in bioremediation (natural cleansing) of excess nitrate-containing groundwater to eliminate the nitrates.

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Answer:

freckles = 50%

no freckles = 50%

Explanation:

Answer:

F. Is fatty acid molecule.

Explanation:

It's unsaturated fatty acid.

Fatty acid consists of a straight chain of an even number of carbon atoms, with hydrogen atoms along the length of the chain and at one end of the chain and a carboxyl group (―COOH) at the other end.

It is that carboxyl group that makes it an acid (carboxylic acid).

While investigating the speed of nerve conduction, Hermann von Helmholtz found that the speed of nerve impulses in a frog's leg was approximately 27 meters per second.

Hermann von Helmholtz was a German physician and physicist who conducted experiments on nerve conduction in the mid-19th century. He measured the speed of nerve impulses in a frog's leg by using a galvanometer, which is an instrument that detects and measures electrical currents. He found that the speed of nerve impulses in the frog's leg was approximately 27 meters per second. This discovery helped to lay the foundation for the study of neuroscience and the understanding of how the nervous system works.

Hermann von Helmholtz, a German physician and physicist, conducted a series of experiments in the 19th century to study the speed at which nerve impulses travel through the body. He achieved this by stimulating nerves in frog legs and measuring the time it took for the muscles to contract. From these experiments, he was able to calculate that the speed of nerve conduction varies between 24.6 and 120 meters per second, depending on factors such as the type and diameter of the nerve fibers, and the temperature of the environment.
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The brain and spinal cord are parts of the central nervous system, while the nerves and all the sensory receptors and motor neurons are part of the peripheral nervous system.

The brain is divided into two hemispheres: the left hemisphere and the right hemisphere. These two hemispheres are connected by a network of nerve fibers located in the brain’s center called the callosum (the brain’s central nervous system). Each of the four hemispheres is divided into four lobes (or sections), all of which are connected to each other. The CNS is responsible for cognitive functions such as thinking, reasoning, emotion, language, and movement.

The peripheral nervous system can be broken down into two sub-systems: the Autonomic (ANS) and the Somatic (SNS) nervous system. The Autonomic Nervous System controls voluntary bodily functions and controls glands. The Somatic Nervous System (SNS) controls muscle movement and sends signals from the ears, eyes, skin, and other parts of the body to the centrally located nervous system.

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Answer:

atmosphere  -affecting the-  biosphere

(I had this question a week ago.)

atmosphere affecting the biosphere is the answer

atmosphere- the air

biosphere- supporting living organisms

Hope this helps you!! :)

Answer: Yield

Explanation: Yielding is an important traffic rule that promotes safety and smooth flow of traffic.  It is an important practice that helps maintain order on the roads and promotes safety for all road users. It's essential to be attentive, follow traffic signs and signals, and be aware of the right of way rules in your area to ensure a safe driving experience.

When you yield, you give the right of way to another driver or pedestrian. This means that you let them go first, even if it might inconvenience you or require you to slow down or stop.

Yielding is typically required in situations such as:

Yielding to pedestrians: When you approach a crosswalk or intersection where pedestrians are waiting to cross, you should yield to them and allow them to safely cross the road before you continue to drive.  Drivers must yield to pedestrians within a crosswalk.  

Yielding at intersections: When you approach an intersection where there are other vehicles, you should yield to those already in the intersection or approaching from the right. This helps prevent accidents and ensures a smooth flow of traffic.

Yielding when merging: When merging onto a highway or another lane, you should yield to the vehicles already in that lane. This allows for a safe and efficient merging process.

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The bird-of-prey population homeostasis was significantly affected by the pesticide DDT (dichlorodiphenyltrichloroethane). DDT was widely used in the mid-20th century for pest control, including targeting insects like mosquitoes. However, DDT has been found to have detrimental effects on bird populations, especially birds of prey like eagles, falcons, and ospreys.

DDT is persistent in the environment and accumulates in the fatty tissues of organisms. Birds of prey are particularly vulnerable because they are high up in the food chain and consume smaller organisms that may have ingested DDT or absorbed it through contaminated prey. As DDT accumulates in their bodies, it can cause thinning of eggshells, leading to reduced reproductive success. The thin eggshells are more likely to break during incubation, resulting in lower hatching rates and decreased population numbers. DDT and other chlorinated hydrocarbons affect predators at the tops of food chains more than herbivores or plants due to a process known as biomagnification or bioaccumulation. These substances have low water solubility and high lipid solubility, meaning they tend to accumulate and persist in fatty tissues.

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Answer:

Explanation:

Photosynthesis is the process of producing Glucose from CO2 and Water. The chemical reaction requires sunlight.

6H2O + 6CO2 ===> C6H12O6 + 6O2

If you are interested in the Environment, you should notice that plants take in CO2 and give away O2, the exact opposite of what animals and humans do. We should be extra careful about how we treat forests -- they produce what we need.

Answer:

The small intestine is adapted for exchanging materials because it has a large surface area, a thin membrane, and an efficient ___b__l_o_o_d__ supply.

Explanation:

Small intestine has an efficient blood supply.

           - Duodenum

           - Jejunum

           - Ileum

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All of the statements correctly identify a lymphatic organ. In vertebrates, the lymphatic organs, also known as the lymphoid system, are an organ system that is a part of the immune system and works in conjunction with the circulatory system.

Hence, all of the statements correctly identify a lymphatic organ.

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Answer:

Bioindicators are living organisms such as plants, planktons, animals, and microbes, which are utilized to screen the health of the natural ecosystem in the environment. They are used for assessing environmental health and biogeographic changes taking place in the environment.

Explanation:

The sunk cost in this situation would be $460,000, which is the accumulated depreciation on the current equipment.

Sunk costs are costs that have already been incurred and cannot be recovered, so the original cost of the equipment and the cost of the new machine are not relevant to determining the sunk cost. It is important to consider sunk costs when making decisions about replacing equipment, as they cannot be recovered and should not be factored into future costs and benefits. Therefore, in this situation, the relevant cost would be the $790,000 cost of the new machine, rather than the $960,000 total cost of the old and new equipment. The sunk cost in this situation refers to the original cost of the equipment that Raven Company is considering replacing. The original cost of the equipment was $500,000. Sunk costs are past expenses that cannot be recovered and should not influence future decision-making. In this case, the sunk cost is $500,000, regardless of the accumulated depreciation or the cost of the new machine. Therefore, the correct answer is option B: $500,000.

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