About one third of all endangered and threatened bird species in the United States live in
A. Alabama
B. Louisiana
C. Alaska
D. Hawaii
E. Florida
Answer: D
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Many solvents expand to occupy greater volumes with increasing temperature. What happens to the concentration of a solution made with such a solvent as its temperature is increased?
A. Since it has a greater ability to dissolve more solute at a higher temperature, its concentration has increased. B. The concentration of a solution increases as the solute fits into the new spaces between the molecules. C. Since it has a greater ability to dissolve more solute at a higher temperature, its concentration has decreased. D. Since concentration depends on how much mass is dissolved in a given volume, as the volume increases, the concentration decreases.
For tides, the amphidromic point corresponds to the wave crest
Indicate whether the statement is true or false
The effect of winds on pollution dispersal is such that
A) the concentration of air pollutants is directly proportional to the wind speed. B) forced convection decreases with increased wind speed. C) strong horizontal winds will lead to some vertical distribution of pollutants. D) changing direction of wind has no significant impact on the rate of pollution dispersal.
The Hadley cell is characterized by
A. high pressure, rising air over the equator, low pressure, sinking air at 30°N and 30°S. B. low pressure, rising air over the equator, high pressure, sinking air at 30°N and 30°S. C. high pressure, sinking air over the equator, low pressure, rising air at 30°N and 30°S. D. low pressure, sinking air over the equator, high pressure, rising air at 30°N and 30°S.