During the Little Ice Age, ____

A) the climatic optimum occurred
B) sea level was lowered by about 280 feet
C) alpine glaciers grew in size and advanced
D) continental glaciers covered large portions of North America


C

Environmental & Atmospheric Sciences

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A cT air mass is:

A) warm and humid. B) cold and dry. C) cold and humid. D) warm and dry.

Environmental & Atmospheric Sciences

What is the underlying geologic explanation for why western South America is so different from eastern South America?

A. The western side marks a plate divergence and the eastern side marks a plate convergence. B. The western side is a plate boundary and the eastern side is not. C. The eastern side is a plate boundary and the western side is not.

Environmental & Atmospheric Sciences

What type of volcano has the most violent eruption?

A. caldera B. shield C. composite

Environmental & Atmospheric Sciences

For a rock to be considered an ore, it must

A. be shiny or otherwise noteworthy. B. contain enough of a commodity to be mined at a profit. C. contain some copper or gold. D. contain either quartz or sulfide minerals. E. be located in a mine.

Environmental & Atmospheric Sciences