The geocentric model of the Universe placed the Earth at the center of the Universe, while the heliocentric model placed the Sun at the center. So the two concepts are opposite to each other.
a. true
b. false
Answer: a. true
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The Younger Dryas refers to a(n)
A) 400 year, from A.D. 800 to 1200, period characterized by warmer than normal conditions in the North Atlantic region (e.g., Greenland and Iceland). B) the current period of unprecedented warming that has occurred since 1980. C) global cooling episode, lasting from approximately A.D. 1250 to 1850. D) brief return to near-glacial conditions during the transition period from the last glacial period to the present interglacial period. E) interglacial period, characterized by a general warming trend, lasting since the last glacial maximum (LGM) to the present.
Which of these are part of “sustainable development”?
a. Finding ways to promote social justice b. Finding ways to promote economic well-being c. Finding ways to promote environmental quality d. All of the above are correct.
How does changing the Earth's surface (for example, by deforestation) change the pathway of water? How does it affect streams and rivers? Humans? Natural ecology?
What will be an ideal response?
What is not true of the backshore?
A) It is a relatively inactive zone. B) It extends to the farthest point that sediment reaches. C) It extends slightly seaward of the berm crest. D) It can include dunes and grasses.