The rate of exchange of carbon between the atmosphere and the oceans represents a carbon:
A. sink.
B. reservoir.
C. biomass.
D. precipitation.
E. flux.
v
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Which examples would be considered different species under the biological species concept? Check all that apply.
_____ Two bear species are able to breed in zoos, but have separate ranges in nature. _____ Two skunk species look morphologically similar, but are unable to interbreed. _____ Two snake species look different, but often form fertile hybrids. _____ Two plant species with no gene flow between them. _____ Two tree species have different leaf shapes, but form hybrids in their overlapping ranges. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about the biological species concept? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
New genetic variation in a population is a critical aspect of microevolution
Indicate whether the statement is true or false
The following nutrient most associated with
eutrophication is: a. iron. b. hydrogen. c. oxygen. d. carbon. e. phosphate.
Valleys are usually ________ than nearby hilltops because ________
A) warmer; they receive more solar irradiance B) cooler; they usually hold a body of cool water C) cooler; cool air is heavier than warm air D) warmer; warm air is heavier than cool air