Thermal pollution generally means refers to which of the following?
A) the decrease in the O2 content of warm water as compared to cold water
B) the increase in the O2 content of cold water as compared to warm water
C) both a and b
D) neither a nor b
A
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Which of the following is TRUE of eutrophication in marine systems?
A) It can lead to algal blooms and red tides that kill fish. B) It does not occur. C) It provides needed limiting nutrients. D) It can aid corals by killing parasites. E) It is rare and occurs only in bad weather.
The explosion marking the destruction of a star is called
a) accretion b) nuclear fusion c) nuclear fission d) nebula e) supernova
Some scientists have suggested that human intervention in the Earth system has been responsible
for a new epoch of geologic time called the Anthropocene. Indicate whether the statement is true or false.
) Isolines
A) cannot be used to make precipitation maps. B) connect points of equal data value. C) were common on maps made before the nineteenth century, but are rarely used now. D) are needed to make sense of three-dimensional maps.