In the Northern Hemisphere, the air circulation about a high pressure cell is clockwise.
Answer the following statement true (T) or false (F)
True
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The consequences of a comet's tail sweeping across the Earth would be
A. quite unpredictable. B. virtually nil. C. likely catastrophic. D. like an enhanced Aurora Borealis worldwide.
An adjective used to describe a shallow sea that covers a large part of a continent:a
organic d. stratigraphic b. mobile e. epeiric c. clastic
Which of the following is NOT a factor in riverine flood occurrence?
a. topography b. dissolved solids c. antecedent rainfall d. vegetation e. intensity of rainfall
Why are there so few ecosystems with more than four levels of consumers?
A) Biomass decreases by about 90% at each trophic level, moving upward. B) Top consumers compete with and kill each other with increasing population size. C) Consumers at these highest trophic levels typically form social groups that stop reproducing at high densities. D) Predators at the highest trophic levels simply are not intelligent enough to hunt other top predators.