Engineers commonly added rock rubble, or _______________, along the banks of a straightened portion of a stream
Indicate whether this statement is true or false.
ANSWER:
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A network of surface and upper-air observations is crucial to meteorological understanding because
A) states and countries rarely share weather observations B) most of the atmosphere is close to the surface C) organized weather systems often cover large areas D) modern computers cannot predict weather in other states
The average depth of the photic zone is ________ in open ocean waters
a. 200 meters (660 feet) b. 600 meters (2,000 feet) c. 100 meters (330 feet) d. 10 meters (33 feet)
Which type of agriculture is found primarily in less developed countries?
A) Mediterranean B) plantation C) truck farming D) commercial gardening E) None of these is found in LDCs; they are all commercial agriculture.
The most important outcome for ecosystem management is
A) ecological sustainability. B) economic productivity. C) recreational use of managed regions. D) opportunities to harvest natural resources.