The best and most correct answer among the choices provided by your question is the first choice or letter A. <span>A biological agent that cannot reproduce on its own is a VIRUS.
</span>A virus<span> is a small infectious agent that replicates only inside the living cells of other organisms.
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<span>The property of this drug that would make it ideal is if it had something to void out the nausea and headache. Even though they aren't considered serious side effects, they can develop into a chronic problem if allowed.</span>
Meiosis because it is the process of gamete formation, which is gametogenesis
Plants on Earth provide food, some even provide shelter to some animals, and plants such as trees provide oxygen to the environment.
The person would have a problem with his metabolism.<span />