The trophic levels that are most seriously harmed by biomagnified pollutants are the lower grazers and producers
Indicate whether the statement is true or false
F
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Although an exact count is not available, it is likely that the human brain has as many as _____
A) 10,000 neurons B) 500,000 neurons C) 1 million neurons D) 10 million neurons E) 100 billion neurons
An individual who avoids light is exhibiting
(a) negative phototaxis. (b) positive geotaxis. (c) negative thigmotaxis. (d) positive thigmotaxis.
Whether an organism is an autotroph or heterotroph depends on its source of nitrogen.
Answer the following statement true (T) or false (F)
Which is most likely to cause genome evolution in mammals with small population sizes?
A. Purifying selection on synonymous mutations and positive selection on non-synonymous mutations B. Accumulation of synonymous mutations and purifying selection against non-synonymous mutations C. Positive selection on nonsynonymous mutations and accumulation of synonymous mutations D. Purifying selection on synonymous mutations and an accumulation of non-synonymous mutations