What is a misconception about the Canada lynx and snowshoe hare cycling?
A) Canada lynx are the only predators on snowshoe hares.
B) Snowshoe hares impact resource abundance.
C) Snowshoe hare populations vary over time.
D) Rodents compete with snowshoe hares for grasses.
A
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If a specimen contains 30% adenine in its DNA, how much cytosine will it contain?
A. 40% B. 30% C. 20% D. 10% E. 15%
Which carbohydrate-digesting enzyme works in the small intestine?
a. bicarbonate b. bile c. salivary amylase d. pepsin e. pancreatic amylase
Why is territoriality an adaptive behavior for songbirds maintaining populations at or near their carrying capacity?
A) Songbirds expend a tremendous amount of energy defending territories so that they spend less time feeding their young and fledgling mortality increases. B) Only the fittest males defend territories and they attract the fittest females so the best genes are conveyed to the next generation. C) Songbird males defend territories commensurate with the size from which they can derive adequate resources for themselves, their mate, and their chicks. D) Many individuals are killed in the ritualistic conflicts that go along with territorial defense. E) Songbirds make improvements to the territories they inhabit so that they can all enjoy larger clutches and successfully fledged chicks.
The changes in the average temperature of the Earth's surface is known as
A. climate change. B. ozone depletion. C. global warming. D. greenhouse gases.