What drives the Rock Cycle in the Earth System?
a. External energy (Solar Heat)
b. Internal energy (Earth's internal heat)
c. Gravity
d. Life
e. All of the above
Ans: e. All of the above
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Why is the human population currently experiencing exponential population growth after 10,000 years of fairly flat growth? How long can this growth pattern continue?
What will be an ideal response?
What causes point bars and cut banks to form? What will be an ideal response?
Farmers suffering severe poverty often barely produce enough crops to survive, so these farmers
A) exist in a downward spiral of degraded land and reduced productivity. B) often accumulate neighboring land, grow their farms, and rise out of poverty. C) work longer days and increase their family sizes until their farms become very profitable. D) typically convert their farms to forests and sell lumber at much higher prices.
What determines the amount of solar radiation that strikes Earth's surface? What is the role of solar energy in creating seasons?
What will be an ideal response?