Crater Lake in Oregon occupies a(n) ____

a. plug dome
b. caldera
c. syncline
d. anticline


b

Environmental & Atmospheric Sciences

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Compared to the temperature today, the past Earth's atmosphere was:

a. significantly warmer b. slightly colder c. almost the same d. significantly colder

Environmental & Atmospheric Sciences

Which processes regulate the world's current level of species diversity?

A) Speciation and migration B) Mutation and humidity C) Extinction and speciation D) Endemism and climate change

Environmental & Atmospheric Sciences

Normal sea level pressure has a value of

A) 1013.2 millibars. B) 500 mb. C) 28.50 inches of lead. D) 32.01 millibars of mercury.

Environmental & Atmospheric Sciences

What country's main source of foreign exchange is ecotourism with over 2.4 million tourists having visited in 2013 alone

A. Mexico B. Honduras C. Costa Rica D. Ecuador

Environmental & Atmospheric Sciences