Sympatric populations evolve reproductive isolation easily
a. true
b. false
Answer: b. false
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Which statement best describes the interactive view of communities?
a. Species exhibit similar distributions along environmental gradients, and the boundaries between communities are sharp. b. Species distributions are independent, and the boundaries between communities are wide transition zones. c. Species exhibit similar distributions along environmental gradients, and the boundaries between communities are wide transition zones. d. Species distributions are independent, and the boundaries between communities are sharp. e. Species exhibit the same distribution along environmental gradients, and there are no boundaries between communities.
How are the processes of artificial selection and natural selection similar and how are they different?
What will be an ideal response?
If you could increase the availability of O2 to the muscle cells of scorpions, you might expect respiration rates to
a. increase. b. remain relatively constant. c. decrease.
Energy is lost as one proceeds from the producer to herbivore trophic level because:
A. herbivores must expend energy to chew and process food. B. of the second law of thermodynamics. C. herbivores lose heat to their surroundings. D. All of the above are correct.