Which of the following best describes energy collection and conversion in a tree?
A) Leaves collect and chlorophyll converts.
B) Leaves convert and chlorophyll collects.
C) Roots collect and leaves convert.
D) Seeds collect and leaves convert.
A
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An extremely long ocean wave created by an underwater earthquake that may travel hundreds of kilometers per hour is a
A) rill. B) dune. C) moraine. D) tsunami.
The new boom in oil and natural gas fracking is posing risks in
A) air quality. B) zoonotic diseases. C) exposure to radioactivity. D) water quality.
During the night, clouds:
A) keep the air cooler by reflecting shortwave energy back to space. B) keep the air warmer by absorbing and re-emitting longwave energy back to the surface. C) keep the air cooler by accelerating longwave energy loss to space. D) keep the air warmer by reflecting shortwave energy back to the surface.
Which of the following describes the distribution of the polar and nonpolar portions of lipids in the lipid bilayer?
A) Both polar heads are on the inside of the bilayer and both hydrophobic tails are on the outside of the bilayer. B) Both polar heads are on the outside of the bilayer and both hydrophobic tails are on the inside of the bilayer. C) Both the inside and outside of the bilayer consist of alternating polar heads and nonpolar tails. D) Some polar heads are on the inside of the bilayer and some are on the outside; the hydrophobic tails are similarly distributed.