A scientist who studies the role of microorganisms in the environment is a(n) .
a. genetic technologist
b. earth microbiologist
c. epidemiologist
d. environmental microbiologist
Ans: d. environmental microbiologist
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How do muscles produce the force that results in movement?
A. By activating neurons B. By shortening C. By responding to hormones D. By elongating
When compared to their warmer water counterparts, cold-water plankton often:
What will be an ideal response?
Symptoms of PMS are caused by
a. uterine lining separation and expulsion during the period. b. the hormone aldosterone causing more absorption of sodium. c. lack of exercise causing hormonal changes. d. lack of sunlight limiting hormone production. e. all of these.
The use of salt and sugar in preserving various types of foods is an application of which of the following concepts?
A. nitrogen fixation B. osmotic pressure C. pH D. hydrostatic pressure E. quorum sensing