The cooling and warming associated with glacial and interglacial periods has been the result of ____.
A. cyclical changes in the shape of Earth's orbit and the tilt of its axis
B. variation in heat produced by the earth's core
C. a slow cycle in the brightness of the sun
D. changes in greenhouse gas emissions by humans and other animals
E. changes in global sea level
Answer: A
You might also like to view...
AAG stands for
a. Association of American Geographers. b. American Association of Geographers. c. Association of American Geoscientists. d. Association of Anthropology and Geography. e. Association of Archaeology and Geography.
Upslope fog hugging the mountain surface occurs when
A) air cools because of decreasing atmospheric pressure; eventually air cools to the dew point. B) air warms because of decreasing atmospheric pressure; eventually air cools to the dew point. C) air cools because of increasing atmospheric pressure; eventually air cools to the dew point. D) air warms because of decreasing atmospheric pressure; eventually air warms to the dew point.
In the wetter regions of humid continental, hot summer climates, grasslands are the natural vegetation
a. True b. False Indicate whether the statement is true or false
The lessons learned from Rachel Carson's Silent Spring reveal the importance of
A) sustainability and stewardship. B) junk science and the influence of politics in government. C) global communication and equity in trade with other cultures. D) the need to establish more state and national parks.