Which of the following time periods contains the others?
A. Cretaceous
B. Mesozoic
C. Triassic
D. Jurassic
Answer: B
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The benthic areas of continental shelf regions are dependent upon ____ for food
a. phytoplankton b. zooplankton c. sinking detritus d. attached algae e. epifauna
Why might tardigrades make good organisms for space flight? What will be an ideal response?
Four of the five choices listed below are examples of
directional selection. Select the exception. a. pesticide resistance b. sexual dimorphism c. wing color in peppered moths d. coat color in rock pocket mice e. antibiotic resistance
Conservation biology supports all of the following ethical principles except
a. the complex interactions of ecosystems support biodiversity and are desirable. b. all animals have the same rights or legal status as humans. c. biodiversity has value in and of itself regardless of any practical benefit to humans. d. biodiversity is desirable for the biosphere and humans. e. extinction due to human actions are undesirable.