Agricultural development can increase erosion rates four to nine times higher than normal unless practices are chosen carefully, resulting in
A. sediment pollution.
B. sediment aggregation.
C. sediment erosion.
D. sediment increase.
Answer: A
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A depression much larger than the original crater, formed when the volcano collapses into an empty magma chamber is called:
a) vent b) caldera c) basin d) schism e) rift
Why would a box on a shelf have a higher potential energy than that of a box on a lower shelf?
A) The box on the higher shelf is heavier B) The box on the lower shelf was placed there after the higher box. C) The box on the higher shelf experiences less gravitational pull; with less gravitational pull comes more weight, thus more potential energy. D) It took more work to move the box to the high shelf than to the low shelf
The materials that formed the Earth and the ocean were formed within starts billions of years ago
Indicate whether the statement is true or false
Which of the following is an essential characteristic of an index fossil?
A) The organism lived in a very specific environment or two, such as tropical volcanic islands. B) The organism lived for a very limited period of geologic time. C) The fossils of the organism are exceptionally well preserved. D) The organism lived on the land, not in the ocean.