PM10 (coarse particulate matter) levels in the United States have ________ between 1990 and 2015.

A. decreased by 39%
B. remained constant
C. decreased by 95%
D. increased slightly


Answer: A

Environmental & Atmospheric Sciences

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What are some of the causes of eustatic change to sea level? Include local possibilities of sea level change as well

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In North America the highest potential for large tsunamis is in the coastal regions of ____

A) the Pacific Coast and Hawaii B) the Hudson Bay C) Louisiana D) the eastern seaboard

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Midlatitude grasslands are found only in North America

Indicate whether the statement is true or false

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