I believe A is the most correct (i assume it's about antibiotics - they actually DO harm our immune system in some way).
B is partially correct because, the colds indeed should be treated by anti-viral medication (because the virus is a cause of typical cold) but using antibiotics during recovery is needed only when an additional bacterial infection occurs as a complication after the viral infection. and it doesn't happen very often.
C - what works? antibiotics doesn't work for viral infections (colds). anti-viral medication do.
D i won't discuss.
I am sorry for a so long answer. but your question is so linguistically twisted that i am not sure which of the following choices is actually correct because of a big amount of mistakes.
Nitrification. Hope this helped!
<span>In the question re-posed as one of the answers the best solution is option D
That is to say Unlike mammals fish ... utilize gills for gas exchangeIn the question re-posed as one of the answers the best solution is option D
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(CALCIUM)
regulation in the human body. The role of vitamin D is shown in orange. Vitamin D is carried in the bloodstream to the liver, where it is converted into the prohormone calcifediol. Circulating calcifediol may then be converted into calcitriol, the biologically active form of vitamin D, in the kidneys.
Answer:
C
Explanation:
C is the most similar because unlike viruses, living things grow and develop, have a basic structure that IS based on cells, and don't require a host. So the only option here that is true for both living beings and viruses is that they both have a way to reproduce.