What is NOT true about outwash plains?
A. most extensive glaciofluvial features
B. streams always have straight channels
C. smooth, flat alluvial deposits beyond moraines
D. develop streams with heavy loads of till
E. often pitted by kettles that form ponds or lakes
B
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Labeling
A. B. In the accompanying oxygen sag curve, choose the zone in which the breakdown of degradable wastes by bacteria starts to deplete the dissolved oxygen. C. In the accompanying oxygen sag curve, choose the zone in which population of organisms with high oxygen requirements will most likely be eliminated.
Which one of the following infectious diseases has been on the rise since 1990 and kills about 1.3 million people per year?
a. AIDS b. West Nile virus c. SARS d. measles e. tuberculosis
From the environmental perspective, it will help to stabilize population growth in developing countries as soon as possible because
a. Poverty has numerous harmful health and environmental effects. b. Poverty has been identified as one of the four major causes of the environmental problems we face. c. Polluting activities and lifestyles are much more prevalent in developing countries. d. All of these answers e. Poverty has numerous harmful health and environmental effects and has been identified as one of the four major causes of the environmental problems we face.
During 25-28 April 2011, the largest ever tornado outbreak occurred, producing ________ tornadoes in 21 states.
A. 358 B. 294 C. 156 D. 35