The greenhouse effect occurs due to ________.
A. CO2 reflecting heat back towards the earth's surface
B. CO2 deflecting heat away from the earth surface
C. the lack of CO2
D. ozone attaching itself to the CO2 and replacing a portion of the earth's oxygen
Answer: A
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The law of thermodynamics that relates to the direction of heat flow is the
A. first law. B. second law. C. third law. D. zeroth law.
If you stand on a pair of bathroom scales, explain how the readings change as you shift your weight gradually from side to side. What rule governs the readings on the scales?
What will be an ideal response?
Permanent damage to the ears begins after prolonged exposure to ____ decibels.
A. 46 B. 85 C. 25 D. 142 E. 182
Why are many contaminants found at higher concentrations in polar bears and people living in Greenland than they are in bears and people living in temperate and tropical areas?
A) Most of Greenland's GDP comes from importing toxic chemicals for disposal deep beneath its ice sheets. B) The ice sheets in Greenland, which provide both people and polar bears with fresh water, were contaminated as a result of the Chernobyl nuclear accident. C) Polar bears and people living in Greenland eat penguins, which are naturally high in toxic contaminants. D) Global atmospheric circulation carries airborne toxins toward the poles, where their deposition exceeds evaporation. E) There are fewer regulations regarding the release of toxic pollutants in Greenland than in other regions of the world.