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Galina-37 [17]
3 years ago
7

Explain why the blood vessels and the heart are not made of the same type of muscle even though they are both involuntary.

Biology
1 answer:
Lubov Fominskaja [6]3 years ago
3 0

Answer:Each muscle in the body is made up of cells called muscle fibers. Muscle fibers are long, thin cells that can do something that other cells cannot do—they are able to get shorter.

Explanation:

IM not sure if this would help but their you go.

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3 years ago
In your own words, explain how fossil records of the past are reliable sources of information about evolution of life on Earth.
marta [7]
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4 0
3 years ago
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4. What is the genotype(s) of a person with type AB blood?
Ilya [14]

Answer:

A person with blood type AB as the genotype AB

Explanation:

A person with blood type A could have the genotype AA or AO. A person with blood type B could have the genotype BB or BO. A person with blood type AB as the genotype AB. And a person with blood type O has the genotype OO.

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How did the lab activities help you answer the lesson question: How does human activity affect Earth’s freshwater resources? Wha
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Extinction of many aquatic species:

The water consumed by humans comes from the fresh water oceans. As the population of humans is increasing enormously, the water from the oceans is being consumed at dangerous levels. This has caused many species of aquatic animals to become extinct or to be at a verge of extinction as they do  not have a habitat to survive or reproduce.

Pollution:

Many heavy industries, house sewage, farmers dispose waste into the fresh water. Hence, killing aquatic animals and polluting the fresh water ecosystems.

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