3 years ago

Look up viruses. Write a short summary of what they are and what they do.

1 answer:

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Answer:

Viruses are neither prokaryotes nor eukaryotes because they lack all of the characteristics of living things except for the ability to reproduce. They are considered parasitic because they cannot live or replicate without a living host. Viruses consist of genetic material (either DNA or RNA), a protein coat, and sometimes a lipid envelope surrounding the protein coat. They have no function except to reproduce.

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Describe a sea-level regression.

Deffense [45]

Answer:

The exposure of sea bed or undersea surface is called sea-level regression.

Explanation:

Sea-level regression occurs when sea level drops down due to several climatic changes. This triggers extinction of several species. There had been several mass extinctions in the past due to sea-level regression. 

Chances of survival of shallow water species become feeble when the sea level falls. In the case of mass extinctions regression can be seen as a symptom and not a cause.

Marine transgression is the opposite phenomena of regression where sea level rises and covers the land which was previously above the sea level.

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2 years ago

Who uses a sage bush as an energy source? PLEASE HELP I WILL MARK BRAINLIEST!!

wel

Some energy sources are wind turbines, generation from air resistance

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2 years ago

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Which statements describe incomplete dominance? Select three options.

viktelen [127]

D both alleles is the answer