The answer is B because class of drugs known as expectorants.
I'm not sure, we did in class, is to make a blue print of all life and rna is made as well. D NA is double stranded, if this not the answer i can look in my notes.
Answer:
rocks and sediments, while the rest is located in the ocean, atmosphere, and in living organisms.
Explanation:
carbo is found in these places for example: