Which of the following influences whether a flood occurs?
A) The height of levees
B) The amount of discharge
C) Urbanization (replacing farms or natural land with buildings)
D) The width of the channel
E) All of these are influences.
E) All of these are influences.
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Only 2% of the earth's land surface is covered by terrestrial biodiversity hotspots. How many of the world's flowering plant species live in these hot spots?
A. 0.5% B. 2% C. 12% D. 30% E. 50%
The greatest concern for the worldwide loss of species is ________
A) habitat destruction B) decreased soil nutrients C) anthropogenic activities D) air pollution E) water pollution
Shortage of clean water is one of the most easily fixed problems in LDCs (less developed countries)
Indicate whether the statement is true or false
What is the depth of wave base?
A. the inside of a tubular breaking wave that is perfect for surfing B. the depth to which wave action extends C. a depth equal to three times the wavelength of waves D. the process by which waves move material along the bottom in very deep water E. None of these choices are correct.