Models of climate are only able to reproduce the warming over the last century only if ________ are added.

A. plate tectonics
B. greenhouse gases
C. population changes
D. solar radiation


Answer: B

Environmental & Atmospheric Sciences

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How long is it estimated to take the ocean's volume of water to circulate through the oceanic crust at spreading centers?

A) 1 million years B) 10 million years C) 100 million years D) None of these choices

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If the greenhouse effect did not exist, what would happen to earth?

A) Earth would be too cold to support life as we know it. B) Earth would be much too hot to support life as we know it. C) Earth would be too wet to support life as we know it. D) Our environment would be greatly improved. E) It would make no difference.

Environmental & Atmospheric Sciences

What contributes the greatest amount of reflection to Earth's total albedo?

What will be an ideal response?

Environmental & Atmospheric Sciences

In cold weather, wind makes us feel even colder because: a. the wind carries heat away from our bodies

b. our metabolism speeds up. c. the skin's peripheral blood vessels expand. d. All of these choices.

Environmental & Atmospheric Sciences