<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 />
Bacteria caused diseases i think
The Suns energy enters the food chain, but the food is energy itself for the predators etc.
Hope this helps
Xylem carries water and dissolved nutrients
Answer:
Measuring heart rate and noting blood pressure is the answer.
Explanation:
