Which of the following is designed to prevent or retard shoreline erosion?
A) beach nourishment B) seawall
C) groin D) all of these
D
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Why might coating a metal with another metal that is harder to oxidize prevent the first metal from being oxidized?
A) It doesn't prevent it, but helps to slow it down. B) All of the oxidizing agent is consumed using up the easily oxidized metal. C) The metal that is coated is protected from moisture and oxygen so it doesn't react. D) The metal that is acting as the coating is protected from moisture and oxygen. E) all of the above
Tyrone Hayes is most famous for his studies ________
A) on gonadal abnormalities in frogs B) about the dangers of second-hand smoke C) on neurological effects of pesticide poisoning D) describing abnormalities in alligators in Lake Apopka E) about the dangers of DDT
A ________ is the outflowing cool air of a downdraft that acts as a "mini-cold front."
Fill in the blank(s) with correct word
Which of the following is not a system?
A) the Pacific Ocean and the west coast of North America B) the study of minerals C) soil, plants, rock, soil organisms, and animals D) the biosphere