Some Great Lakes fish are unsafe for human consumption because of their mercury content.
Answer the following statement true (T) or false (F)
True
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Which nation in Central America has the highest percentage of Foreign Direct Investment (FDI) of its GNP?
A) Panama
B) El Salvador
C) Honduras
D) Costa Rica
E) Guatemala
Based on the composition of the magma that erupted to form the volcanoes, which of the following statement(s) would most likely be true?
a. The magma that erupted contained very little gas b. The magma that erupted contained a lot of gas c. The eruptions were very explosive d. The eruptions were non-explosive e. The erupting magma had a high viscosity f. The erupting magma had a low viscosity
The greatest threat to tropical rain forests is ________
A) birds feeding in canopies of many trees B) deforestation C) high nitrogen levels in the soil D) pesticide use E) lack of rainfall
The _____ in the earth's stratosphere is seasonally centered over Antarctica, but thanks to the Montreal Protocol it is currently shrinking
a. greenhouse effect b. ozone hole c. ice cap d. aurora borealis e. magnetic pole