What is NOT a drawback of hydropower?
A) The electricity generated is incredibly expensive (more than coal, oil, and nuclear power).
B) It is disruptive to the natural environment.
C) It can increase diseases.
D) Silting of reservoirs can occur, which reduces the potential to produce electricity.
E) Downstream users of rivers might resent upstream countries damming a river.
A
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Which of the following types of fronts is represented by alternating lines of blue and red on a surface weather map?
A. cold front B. warm front C. stationary front D. occluded front
Indian reservations are among the poorest communities in both the U.S and Canada. What problems do reservations currently experience?
The first step in turning a rock into a sediment is ________
A) gravity and erosional agents (wind, water, etc.) remove material from the parent rock B) weathering alters the rock C) rock is broken into small pieces during the transportation phase D) compaction
The ________ effect causes ocean currents to be deflected to the right of their path of motion in the Northern Hemisphere
Fill in the blank(s) with correct word