The large influx of freshwater that scientists believe greatly slowed the ocean conveyor belt system about 12,900 years ago likely came from the melting of the
A) Laurentide ice sheet.
B) Himalayan glaciers.
C) Antarctic ice sheet.
D) Patagonian ice sheet.
Answer: A) Laurentide ice sheet.
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An ecosystem is best defined as ________
A) abiotic factors affecting a grouping or plants, animals, and organisms trying to survive in a given area B) all the organisms and their physical and chemical environment within a specific area where energy and matter influence the distribution and abundance of organisms present C) a grouping of plants and animals that interacts with one another in a way that causes the grouping to die D) a regional grouping of plants, animals, and abiotic factors E) the total population of a specific kind of plant, animal, or microbe and all members of which do or potentially can interbreed and produce young
The systematic names for water, ammonia, and methane are dihydrogen monoxide, H2O; trihydrogen nitride, NH3; and tetrahydrogen carbide, CH4. Why do most people, including chemists, prefer to use the common names for these compounds?
A. These compounds are encountered frequently. B. The common names are shorter and easier to pronounce. C. The common names are more widely known. D. all of the above
Which wind belt is located at letter B?
A. southeast trade winds B. northeast trade winds C. polar easterlies D. westerlies
The effect of the 2008 recession has
A) increased the pace at which people are moving from inner cities to suburbs. B) made existing properties more valuable. C) greatly slowed the suburban building boom, the purchase of new houses and the growth of the urban tax base. D) reversed the movement to suburbs, increasing the pressure to find housing in the inner city.