Which of the following must result in a lower base level for rivers and streams?
A) sea level falls; land rises B) sea level rises; land rises
C) sea level rises; land subsides D) sea level drops; land subsides
A
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Oxygen atoms are used to make water molecules. Does this mean that oxygen, O2, and water, H2O, have similar properties?
A. Yes, but that their properties are similar is only a coincidence. B. No, but their similar properties are only a coincidence. C. Yes, and this explains how fish are able to breathe water. D. No, compounds are uniquely different from the elements from which they're made.
Prior appropriation allocates water rights based on:
A. who started using the water first. B. who owns the most livestock. C. who is the first born child. D. who owns the most land.
A second-growth forest is a(n) ____.
A. old-growth forest with lots of new seedlings B. old growth forest with recent regeneration C. forest resulting from secondary succession D. old growth forest that has been cut down with only weeds remaining E. forest containing only one or two species of trees that are all of the same age
Cities generate large amounts of heat because of factories, cars, lights, air conditioning, and dark roofs. This creates a phenomenon called ____.
A. urban heat island B. light pollution C. heat pump D. heat stroke E. greenhouse effect