Answer:
B- environmental factors do most of the “selecting.”
Explanation:
Natural selection is the environment that the organism lives in, and the process which that organism changes by.
Artificial selection is when humans intervene and create an organism that isn't suited for their specific environment, but rather for the humans own liking.
Think of breeding dogs to be smaller, or more fluffy and adorable. These are not traits to help them survive in where they original environment was.
Superficially, the connection between the cell cycle and cancer is obvious: cell cycle machinery controls cell proliferation, and cancer is a disease of inappropriate cell proliferation. Fundamentally, all cancers permit the existence of too many cells.
Antibiotics are ineffective in treating viral infections because Antibiotics kill only living cell. Antibiotics treat bacterial infections but not viral infections. Foe example, an antibiotic is an appropriate treatment for step throat, which is caused by the bacterium Streptococcus pyogenes. However, it is not the right treatment for most sore throats, which are caused by viruses.
