Herbivores, carnivores, omnivores, and detritivores are subclasses of which one of the four components of a typical ecosystem?
a. abiotics
b. autotrophs
c. decomposers
d. consumers
d
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Friction
A) increases with altitude. B) is greater near the ground surface. C) diminishes turbulence. D) is responsible for weaker winds aloft.
During a total lunar eclipse, the moon remains visible because ________
A) the atmosphere of the earth refracts light around its perimeter B) the atmosphere of the moon diffuses light from the other side of the moon C) the earth is too far from the moon to totally cover the solar disk D) None of the above; the moon completely disappears against the night sky.
Give two examples of pollution control. For each control, identify at least one cost and one benefit
What will be an ideal response?
Which site would most likely contain oil in the subsurface? 
A. A, a permeable sandstone B. B, an impermeable shale C. C, a permeable sandstone D. D, an impermeable shale