Primary productivity of the open oceans is very limited because of
A) the shortage of water.
B) the shortage of light.
C) the shortage of nutrients.
D) low temperature.
C
Environmental & Atmospheric Sciences
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Where has the deadliest political and ethnic conflict, with an estimated war-related 5 million deaths, in the region been?
A) Kenya B) Ivory Coast C) South Africa D) Democratic Republic of the Congo E) Uganda
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Radioactive decay in the Earth, especially in the Earth's crust, creates a tremendous amount of
A. pressure. B. heat.
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Even as early as 1910 in the U.S., services exceeded manufacturing employment
Indicate whether the statement is true or false
Environmental & Atmospheric Sciences
Which of the following is not a possible cause of coral bleaching?
A) ocean acidification B) disease C) pollution D) parasitic relationship between the coral polyp and algae E) sedimentation
Environmental & Atmospheric Sciences