Human vulnerability to toxins is varied; however, the main influences determining the effects of toxic substances on different individuals are genetics, socioeconomic status, general health, and ________
A) profession
B) age
C) urban or rural residency
D) global geography
E) ethnicity
B
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Most of Earth's freshwater is located in
A) polar ice caps and glaciers. B) groundwater. C) rivers, lakes, and streams. D) the atmosphere.
Fringing reefs are separated from land by a lagoon. Indicate whether the statement is true or false
Which of the following is the correct molecular formula for heptane?
A) C5H12 B) C6H14 C) C7H16 D) C8H18
As surface air rushes in toward the eye of a hurricane, the air expands and should cool. The main reason the surface air is not cooler around the eye is because
a. the sinking air near the eye warms the air. b. friction with the water adds heat to the air. c. the warm water heats the air. d. sunlight heats the air. e. the spinning motion prevents air from rising or sinking.