Organisms such as a mackerel sharks and tunas that can maintain a relatively constant body temperature are referred to as ________
A) homeothermic
B) cold-blooded
C) poikilothermic
D) ectothermic
E) None of the above is correct.
A
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Mercantile colonialism was a period of commercial rather than government dominance by Europeans
Indicate whether the statement is true or false
Which of the following slope failures moves at the slowest rate?
A. rock avalanche B. earth flow C. debris avalanche D. debris flow E. rock fall
Which of the following is not true about the spatial scales at which soil scientists study soils?
A) The smallest individual unit with which soils are described is called a soil pedon. B) A pedon can be about 1 to 10 square meters and deep enough (about 2 meters deep) to distinguish soil horizons. C) A pedon must be significantly different in properties from the pedons adjacent to it. D) Boundaries between different soil types on the landscape can be gradational or fairly abrupt.
Which water mass is characterized by increasing density with deeper depths?
A) Surface zone B) Deep zone C) Pycnocline zone D) Mixed layer