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Studentka2010 [4]
3 years ago
15

Lab: Effects of Human Activity on Freshwater Resources (essay)

Biology
1 answer:
Bogdan [553]3 years ago
3 0

Answer:

Our water resources face a host of serious threats, all of which are caused primarily by human activity. They include sedimentation, pollution, climate change, deforestation, landscape changes, and urban growth.

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Which of the following is true concerning cancer cells?
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a.They evade the normal controls that trigger programmed cell death.

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Unlike normal cells that are controlled (reproduce only when needed) and are more specialized with specific functions, cancer cells are less specialized compared to normal cells and grow abnormally and rapidly. Cancers cells grow out of control, as they evade the normal control and ignore signals that activate apoptosis or programmed cell death which is used by the body system to destroy unwanted cells.

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Both birds and dogs use DNA as instructions for building their bodies even though they are very different organisms because DNA of all the organism are made up of same four type of base adenine, thymine, cytosine, and guanine. These bases make genetic code that is universal in all the organisms.

Explanation:

hope it hlp

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