We say that Earth's current climate is now in a(n) ________ because glaciers cover high latitudes. We further say that it is in a(n) ________ because the glaciers have melted mostly back to the poles
A) interglacial period; tropical climate
B) ice age; glacial period
C) ice age; interglacial period
D) glacial period, interglacial period
C
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Factors that act to limit the growth of populations are collectively called
a. carrying capacity b. Death c. Emigration d. environmental resistance e. environmental capacity
Which house is at the most risk of earthquake damage?
a. House A b. House B c. House C d. House D
The earth's earliest atmosphere was probably composed mainly of ________, which has/have since largely dissipated into space.
A. Oxygen B. Water C. Hydrogen and helium D. Carbon dioxide and methane E. Nitrogen and sulfur
In a food chain, biomagnification is the result of
A) bioaccumulation up to higher trophic levels. B) bioaccumulation down to lower trophic levels. C) higher levels of toxins than in the organisms living in that region. D) rapid elimination of toxic wastes from the body.