Answer:
Rocks from retreating glaciers
<span>There are three phases of clnic study and one post approval phase required by the Food and Drug Administration (FDA) for a New Drug Application (NDA). Phase IV which is a common stipulation by the FDA includes continual evaluation of the drug after approval has been granted.</span><span />
The correct answer to this question is letter "C) occupy different niches within the tree." Several species of warblers can live in the same spruce tree ONLY because they <span>occupy different niches within the tree. Hope this answer helps out your question. </span>
