Why do atmospheric carbon dioxide concentrations fluctuate seasonally?
A. changes in plant growth
B. changes in human activity
C. changes in temperature
D. changes in precipitation
Answer: A
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If you filter sea water to remove all of the particles, you would be left with a clear
A. pure liquid. B. heterogeneous mixture called a solution. C. homogeneous mixture called a suspension. D. homogeneous mixture called a solution. E. heterogeneous mixture called a suspension.
The intrusive (coarse grained) igneous rock diorite has the same chemical composition and mineralogy as the extrusive (fine grained) igneous rock:
a) rhyolite b) basalt c) andesite d) peridotite e) granite
Prosimians include _____, _____, _____, and _____. Fill in the blank(s) with the appropriate word(s)
Most natural hazards such as earthquakes, tornadoes, and hurricanes can be prevented.
Answer the following statement true (T) or false (F)