Suppose a stream flows from its headwaters, through a reservoir to its mouth in the Gulf of Mexico. Where is ultimate base level?
A. At the reservoir
B. At the Gulf of Mexico
C. At the headwaters
Answer: B
Environmental & Atmospheric Sciences
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A 1/1,000,000 species per year extinction rate, which is the estimated average rate of extinction in the history of life on the earth, is called ____ extinction.
A. background B. local C. ecological D. biological E. total
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If the gradual rise of deep water at temperate and tropical zones were to stop, the thermocline would
rise, making the difference in water layers steeper Indicate whether the statement is true or false.
Environmental & Atmospheric Sciences
On a planetary scale, the ocean comprises about ____% of Earth's mass
A) 71 B) 20 C) 8 D) 0.02
Environmental & Atmospheric Sciences
Ethnic cleansing in Bosnia-Herzegovina was carried out against which group(s)?
A) Serbs B) Croats C) Muslims D) Serbs and Muslims E) Muslims and Croats
Environmental & Atmospheric Sciences