The mT air masses pictured here originate
A. over water, are unstable, and bring warm air during the winter.
B. over water, are stable, and bring cold air during the summer.
C. over land, are stable, and bring cold air during the summer.
D. over land, are unstable, and bring warm air during the winter.
Answer: A
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What could cause a canyon to be deeper upstream than downstream?
A) The area upstream could be uplifted more than areas downstream.
B) The area upstream is higher above base level and so results in deep erosion.
C) A steeper gradient allows more erosion upstream.
D) All of these are correct.
The energy that drives surface ocean currents such as the Gulf Stream comes from ________
A) Coriolis effect B) density differences C) salinity variations D) prevailing winds
Should city and government officials allow residents to rebuild and live in cities along the coasts in the Southeast U.S. located below sea level that are subject to hurricane damage and catastrophic storm surge?
1.Yes 2.No
Pikes Place Market in Seattle and Portland's Saturday Market are examples of the increasing importance of ________ to the economy of the Pacific Northwest
Fill in the blank(s) with correct word