Ozone consists of ________ molecules of oxygen, is found primarily in the ________ and protects us from ________.
A) three, stratosphere; ultraviolet rays
B) two; troposphere; cosmic rays
C) two; stratosphere; x rays and gamma rays
D) two; troposphere; meteors
A) three, stratosphere; ultraviolet rays
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As in the United States, wealthier people in European cities cluster
A) along a sector extending out from the CBD. B) along major highways. C) in and around the inner city's historic buildings. D) in bunches around stadiums and opera houses. E) along industrial parks and waterways.
?What makes harmful algal blooms so dangerous?
Fill in the blank(s) with the appropriate word(s).
Instructions: Choose one answer from each pair of selections. When air is saturated, the rate of evaporation is GREATER THAN | EQUAL TO the rate of condensation
The year that Boston was able to reduce its water consumption to below 275 millions of gallons per day was ________
A) 1994 B) 1998 C) 1992 D) 1985 E) 2009