Heavy metals ________
A) are not harmful unless they are directly ingested
B) become less hazardous after incineration
C) are unregulated by the U.S. government
D) bioaccumulate in animal tissues
E) become less hazardous over time as they degrade chemically
Answer: D
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Which pole of a compass needle points to a south pole of magnet?
A) north pole B) south pole C) both A and B
Groundwater migrates from areas of low pressure to areas of high pressure
Indicate whether this statement is true or false.
Civil war in Sri Lanka between the Sinhalese and Tamils occurred because of
A. the economic policies of the British colonizers B. post-independence policies that allegedly favored the Sinhalese over the Tamils. C. conflicts between religious minority and majority populations. D. competition over areas with rich mineral deposits.
European explorers hoped to find the Northwest Passage because ________
Fill in the blank(s) with correct word