Answer:
Viruses did not evolve first, they found. Instead, viruses and bacteria both descended from an ancient cellular life form. ... Viruses carry only the essential genetic information they need to be able to slip inside a host cell and coax it into making new copies of the virus
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Answer:
D
Explanation:
Because every system in the body is vital
2nd I'm pretty sure. it would truly be correct if it were italicized to
The earth got hit by a meteor billions of years ago and now it sits on an axis
The answer is <span>B. It can reproduce quickly.
A single-celled organism, as its name explains, consists of only one cell. This cell must be small because, in a large cell, it would be needed a great time for information, nutrients and other molecules to travel from one part of the cell to another (choice A. is eliminated). That small cells are able to reproduce quickly because their dimension allows them to divide to new cells quickly (even 20 minutes). Still, although it is only one cell it must maintain its structure (choice C is eliminated), and cannot tolerate all environmental conditions (choice D is eliminated).</span>