The answer is D because of smoking and the smoke fills places and the smoke is dangerous to breathe in. If you are younger than 18 and are using drungs it is against the law to do that. Finnally they increase spread of disease because you could have too much drugs.
hope this helped :)
alisa202
Answer:A
Explanation:Because she needs the least amount of water in her body to be able to run well
DNA<span> is a long polymer with deoxyribose and phosphate backbone. Having four different nitrogenous bases: adenine, guanine, cytosine and thymine. </span>RNA<span> is a polymer with a ribose and phosphate backbone. Four different nitrogenous bases: adenine, guanine, cytosine, and uracil.</span><span />