In natural ecosystems, what types of organisms feed off pest species and control the pest populations?
A. prey
B. rodents
C. pesticides
D. natural enemies
E. insects
Answer: D
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Synergistic health risks are associated with a person who smokes and
A) delivers mail in a farming community. B) works inside of an office building. C) works in a coal mine. D) jogs in a park for exercise.
The niche of a species is the functional role of that species in the community that it belongs to
Species that have narrow niches (have very specific resource requirements) are said to be ________, while species that have broad niches (able to use a wide array of resources) are known as ________. A) Type 2 species; Type 3 species B) widespread; restricted C) r-selected species; K-selected species D) specialists; generalists E) generalists; specialists
Moose, lynx, and burrowing rodent species are most likely found in which of the following?
A. temperate grasslands B. deserts C. boreal forests D. tropical forests E. savannahs
Which main-sequence stars are the least massive?
A) yellow B) orange C) blue D) red