Which of the following represents energy flow in a grazing food web?
a. producers ? detritivores ? decomposers
b. producers ? decomposers ? detritivores
c. producers ? herbivores ? decomposers ? carnivores
d. producers ? herbivores ? carnivores ? decomposers
e. producers ? herbivores ? detritivores ? carnivores
ANSWER: d
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A. balancing selection B. disruptive selection C. stabilizing selection D. directional selection
Transgenic organisms contain extra copies of their own genes
a. True b. False
Which is NOT ordinarily capable of being reduced at
any time? a. NAD+ b. FAD c. oxygen, O2 d. water e. all of these
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A. cytoplasm and ribosomes B. nucleolus and nucleus C. microtubules and microfilaments D. chromosomes