The amount of ozone in the upper atmosphere
A. contributes to smog.
B. shields the earth from radiation from ultraviolet light.
C. increases with the presence of chlorofluorocarbons.
D. All of these statements are correct.
Answer: B
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You have the most characteristics in common with members of your own ____
a. kingdom b. phylum c. class d. genus e. species
The Caymans have only ________ inhabitants, but there are ________ companies located there (on paper), including several hundred banks and the world's four largest legal and accounting firms
A) 1,300,000; 2,000,000 B) 220,000; 110,000 C) 120,000; 10,000 D) 60,000; 61,000 E) 40,000; 70,000
Infrared satellite images are computer-enhanced to:
a. increase the contrast between specific features in the picture. b. show where thick clouds with cold tops are located. c. show where clouds with tops near the freezing level are located. d. all of the above
Oxygen is abundant in the atmosphere but it does not combine with minerals of the Earth's crust.
Answer the following statement true (T) or false (F)