In succession, facilitation refers to ________
A) competition for space by different populations of species
B) species creating competition for food and water making it harder for species succession
C) species altering the environment around them in ways that make it more habitable for other species
D) species sharing space, environment, and resources
E) the migration of plant species
C
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The albedo of the Earth's surface is about 4 percent, yet the combined albedo of the Earth and the atmosphere is about 30 percent. Which of the following conditions BEST explains why this is the case?
A. low albedo of clouds, low albedo of water B. high albedo of clouds, low albedo of water C. low albedo of clouds, high albedo of water D. high albedo of clouds, high albedo of water
Travelers flying west from Los Angeles (118° W) to Tokyo (139° E) will cross the ________ and, as a result, they will ________ when crossing this meridian
A) International Dateline; gain a day (Example: Sunday becomes Saturday.) B) International Dateline; lose a day (Example: Saturday becomes Sunday.) C) prime meridian; gain a day (Example: Sunday becomes Saturday.) D) prime meridian; lose a day (Example: Saturday becomes Sunday.)
At low elevations near the equator, high temperatures and abundant yearly rainfall combine to produce a dense, broadleaf, evergreen forest called a ____________________
Fill in the blank with correct word.
Most commercial loggers prefer "clear-cut" harvesting because it
A. Is the most efficient, cheapest harvest method using large, fast machinery instead of costly labor B. Is the most environmentally sustainable type of harvest C. Does not waste any trees D. Is the most efficient way to get valuable small timber without disturbing the larger early successional trees E. Is the most effective way to refresh soil with sun and rain