A. Petrified
<span>Petrified wood (from the Greek root petro meaning "rock" or "stone"; literally "wood turned into stone") is the name given to a special type of fossilized remains of terrestrial vegetation. ... A forest where such material has petrified becomes known as a petrified forest.</span>
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Answer:
The investigator should discuss the pros and cons of both the investigational drugs and the drugs that are commercially available drug and then allow the subject so that he can decide whether to withdraw form the ongoing research to take the new drug.
Explanation:
When the 46-year man enrolled in the Phase III study of the drug. When the research was going on a new drug became available in the market in that case the investigators should discuss the benefits and the drawbacks of the investigational drug and the other drug that is commercially available then let the subject decide whether to keep on the research or not.
Answer:
In total, deltas cover 0.56% of the total area of the world yet contain 4.1% of the world's population. ... Of the 300 million people currently living on deltas, roughly 69% live below 10 meters elevation in the so-called low elevation coastal zone that is particularly susceptible to coastal flooding.
Explanation: