The atomic mass of the atom identified as A in Figure 2-1 is:

a. 2.

b. 6.

c. 8.

d. 12.

e. 18.


D

Biology & Microbiology

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A geologist going through a sediment core is likely to find remnants of ancient calcium carbonate containing ________ and silica containing ________

A) diatoms / cercozoans B) cercozoans / diatoms C) chlorarachniophytes / foraminiferans D) foraminiferans / chlorarachniophytes

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The limnetic zone is indicated by

a. A. b. B. c. C. d. D. e. none of these.

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Dormancy can be triggered by

a. low Pfr levels. b. the production of abscisic acid. c. nitrogen deficiency and low soil moisture. d. cold nights. e. all of these.

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Which of these diseases does not belong with the others?

A) Yersinia pestis B) Measles C) Brucella D) Hantavirus

Biology & Microbiology