To which phylum does the American black bear (Ursus americanus) belong?

a. Mammalia
b. Carnivora
c. Chordata
d. Ursidae
e. Ursus


ANSWER: c

Biology & Microbiology

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Nitrifying Thaumarchaeota outcompete nitrifying bacteria in many aquatic and terrestrial environments because Thaumarchaeota

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the appendix is a part of the _____ intestine

What will be an ideal response?

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Suppose that a scientific idea is well-tested and can be used to make predictions in numerous new situations, but cannot explain one particular event. This idea is a

A) theory that may need revision. B) hypothesis that must be retested. C) hypothesis that is incorrect. D) theory that should be discarded.

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Starch, cellulose, and glycogen are alike in that they

A. have the same types of bonds between the monomer units. B. can all be digested by our bodies. C. contain the same number of side chains. D. are all made of glucose. E. are all found in animals.

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