The least oxygenated water is indicated by
a. A.
b. B.
c. C.
d. D.
e. E.
Answer: b
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In Siamese cats, enzymes that code for dark fur color are only active in cooler temperatures. Thus, the tips of a
Siamese cat’s ears, feet, and tail are dark but not the warmer regions of its body core. This is an example of ____.
a. Pleiotropy b. environmental effects c. epistasis d. incomplete dominance e. co-dominance
The letter “A” in the above figure represents
a. trigger zone. b. output zone. c. input zone. d. conducting zone. e. none of these.
The ecological footprint model is used to compare resource use of individuals in different regions. Which of the following questions about ecological footprints is outside the scope of scientific investigation?
a) should restrictions be in place to limit the size of an individual's ecological footprint b) how does an individual's ecological footprint change over his or her lifetime c) how does a reduction in resource use affect the size of an individual's ecological footprint d) what area of land and water are needed to supply the resources needed by an individual in a particular area
Which organisms would most likely be present on the bottom or closest to the attachment surface of a complex microbial biofilm?
A. Facultative chemoorganotrophs B. Anaerobic sulfate-reducing bacteria C. Eukaryotic protists D. Cyanobacteria