Answer:
Since you didnt give an excerpt I can't answer. But I can give you advice. Read through and see If you can find, maybe less food or a higher predator or something like that
Explanation:
Hello There!
Before viruses can reproduce, they must infect a host cell.
Viruses need a way to enter the body before they can infect a host cell.
Answer:
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Answer
C. Electron transport chain