Tiny plants and animals that float freely with ocean currents are termed _______________
Fill in the blank(s) with correct word
plankton
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What factor has been most crucial to the survival of the relatively few remaining indigenous people of Latin America?
A) water B) land C) energy D) jobs E) education
Which of the following statements describes the atmospheric condition when the sky begins to turn milky white?
A. Small particles such as dust and salt become suspended in the air. B. The daytime temperature is oppressively hot. C. The relative humidity decreases below about 10 percent. D. The concentration of ozone begins to reach dangerous levels.
The oil spill resulting from the 2010 Deepwater Horizon disaster ________
A) resulted in a permanent ban on all offshore drilling in U.S. coastal waters B) was quickly cleaned up, preventing loss of wildlife and damage to fisheries along the Gulf Coast C) eclipsed all non-point oil spills by 500% D) is considered a minor incident compared to other oil spills E) is the largest accidental oil spill in world history
What do the two stars near the center of this block represent?
A) They represent the location of the earthquake.
B) The star at depth is the place where the earthquake is generated.
C) The star at depth is the hypocenter.
D) The star on the surface is the epicenter.
E) All of these are correct.