Fuels such as gasoline are nonpolar and high in energy because they are largely composed of
A. sulfates.
B. hydrocarbons.
C. carboxylic acids.
D. amines.
E. carbonyls.
B. hydrocarbons.
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What does the graph in the figure above tell you about the definition of a keystone species?
A) A keystone species has little interaction with other species in an environment. B) Removing a keystone species from the community drastically reduces diversity. C) Adding a keystone species to the community will make it more diverse. D) Removing a keystone species from the community will eventually allow for the invasion of a new species.
When female fruit flies mate with two different males on the same day, _____
A) the first male's sperm fertilizes all of the eggs B) the first male's sperm fertilizes most of the eggs C) the second male's sperm fertilizes most of the eggs D) the first and second males fertilize equal numbers of eggs E) none of the eggs become fertilized
The presence of a tympanic membrane in insects and vertebrates is an example of:
A. divergent evolution. B. coevolution. C. convergent evolution. D. adaptive radiation.
What is an action spectrum?
What will be an ideal response?