The economics of solar electricity are
A) bleak because there is a large gap between the price of energy from coal and from PV cells.
B) excellent for CSP technology but discouraging for PV cells.
C) growing at a phenomenal rate as the current $60 billion industry is expected to double by 2020.
D) less promising because the costs of ecosystem damage and pollution are not counted.
C
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Rocks overlying a fault plane is the ____________________ block
Fill in the blank(s) with correct word
Most of what we know about the history of life on the earth comes from fossils.
Answer the following statement true (T) or false (F)
The main influences on tropical cyclone paths include all but which of the following?
A. Trade winds blow the tropical cyclone toward the west. B. The Coriolis effect adds a curve to the right that progressively increases in strength with increasing distance to the equator. C. They adjust to high- and low-pressure systems they encounter. D. the presence or absence of large cargo ships in their paths E. Hurricane paths vary depending on the size and position of the Bermuda High.
What is the term for the pair of ridges on the floodplain running parallel to the stream bank?
A. Stream terrace B. Levee C. Point bar D. Backswamp