Which of the following biomes is characterized by rich soils, insufficient rainfall for trees, and many herbivores?
A. chaparral
B. taiga
C. desert
D. tundra
E. grasslands
Answer: E
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A small group of mice are released on an island without mice but with abundant food for mice and no predators. Initially, the growth of the mouse population will be limited mainly by what?
A. Only density-dependent factors B. Only density-independent factors C. The biotic potential D. The carrying capacity
The trade-off between investments in current reproduction and in growth that promotes future reproduction is referred to as the total cost of what?
A. adaptation B. selection C. reproduction D. genetic change E. fitness
Excitatory synapses cause hyperpolarization of post-synaptic cells.
a. true b. false
The broth dilution test can provide information for determining
A) the molecular target of an antibiotic. B) the MIC (minimum inhibitor concentration). C) the rate of diffusion of an antibiotic. D) the MBC (minimum bactericidal concentration), with an additional step. E) both the MIC and the MBC (with an additional step).