Landslides, rock falls, and floods illustrate
A) that Earth is made of rock.
B) that Earth is very old.
C) that Earth is dynamic.
D) that the crust of Earth is stationary and static.
Question 2
Why would a box on a shelf have a higher potential energy than that of a box on a lower shelf?
A) The box on the higher shelf is heavier
B) The box on the lower shelf was placed there after the higher box.
C) The box on the higher shelf experiences less gravitational pull; with less gravitational pull comes more weight, thus more potential energy.
D) It took more work to move the box to the high shelf than to the low shelf
The discovery of aquaporins, water channels made of a transmembrane protein.
The Distribution of the Earth's Wealth
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