The primary factor responsible for mass wasting is ____
a. water
b. wind
c. gravity
d. ice
c
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Which organ or organs tell us the location of different parts of our body?
A. the retina B. proprioceptors C. the organ of Corti D. the vestibular organs
Residence times are dependent upon steady-state conditions and a well-mixed ocean
Indicate whether the statement is true or false
One of the results of humans continuing to convert ecosystems to more direct human uses is that
A) the benefits are experienced locally while the losses are experienced regionally or globally. B) the human uses are much more productive than the natural systems. C) ecosystems function best when they are managed by humans for human uses. D) humans can redirect natural systems to more sustainable systems.
What is the greatest contributing factor in the loss of polar bears in arctic areas?
A) decline in sea ice B) the decline of lemmings; the primary food of the polar bear C) the tundra shifting northward D) hunting of the polar bear by the Inuit people E) fires in the taiga and tundra