The result of natural selection is
A. extinction.
B. catastrophism.
C. adaptation.
D. synthesis.
E. behavioral change.
C. adaptation.
You might also like to view...
You are at the aquarium looking at a freshwater mammal tank and a manatee swims close to the glass. On his front flippers you see fingernails. You think, what possible use could fingernails be to a manatee, then you realize they are of no use at all. Which of the following best explains the presence of fingernails on a manatee?
A. they are remnants of the bones used by fish for their fins. B. they are homologous structures. C. the bones are protruding from the fins and only look like fingernails, even though every manatee in the tank looks like it has fingernails. D. convergent evolution has occurred. E. they are vestigial structures.
The main photosynthetic pigment used by plants is _____.
a) RuBP b) chlorophyll a c) NADPH d) ATP
Neutrophils require ________to digest phagocytized microbes in______.
a) Antioxidants; phagolysosomes b) Reactive oxygen species; phagosomes c) Free Radicals; phagolysosomes d) Reactive nitrogen species; lysosomes
The science called microbial ________ studies interactions between microbes and their environment and how those interactions affect the earth.
Fill in the blank(s) with the appropriate word(s).