The Milankovitch cycles in association with other natural factors explain how glaciers may advance and retreat over periods of ____ years
A) hundreds of millions of
B) several million
C) hundreds of thousands of
D) ten thousand to one hundred thousand
D
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What type of structure is expressed in this cliff face?
A) Normal faults
B) Reverse faults
C) Joints
D) Folds
What is the point of subsurface origin of an earthquake called?
a. focus b. ground zero c. epicenter d. scarp e. nexus
Describe the formation of the mP air masses that brings most of the moisture to the west coast of North America
What will be an ideal response?
In the United States, the use of hydropower
A) is likely to double in the next 20 years. B) is likely to increase by about 40% by 2025. C) will likely stay the same or decrease slightly in the next few decades. D) will decline considerably, as much as 50%, by the year 2030.