The trend in which organisms come to have characteristics that suit them to conditions in a particular
environment is called
a. genetic drift.
b. adaptation.
c. mutation.
d. isolation.
e. divergence.
B
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What will be an ideal response?
Most gastric ulcers are caused by
A) overuse of aspirin and/or ibuprofen. B) excessive mental stress. C) bacteria. D) overconsumption of alcohol.
A solution with a pH of 4 has ________ the concentration of H+ present compared to a solution with a pH of 5.
A. 2 times B. 10 times C. 100 times D. 1000 times
Which organ in reptiles and mammals binds and responds to pheromones released by other members of the same species?
A. Olfactory B. Nasopharynx C. Papillae D. Vomeronasal E. Cochlea