Which one of the following would be the most practical way to reduce levels of photochemical smog in a city that frequently experiences this problem?
A) Changes in weather that produce more days of sunshine
B) Changes in weather that result in more days of fog
C) Reducing the amount of electricity generated using windmills
D) Reducing the number of automobiles that burn gasoline and the amount of evaporated gasoline
Question 2
What global event happened about 35 years ago that helped some fishing areas recover?
A) All commercial fishing was limited to hand lines instead of nets.
B) Nations extended their jurisdiction from 12 miles to 200 miles offshore.
C) The size of the vessels used for commercial fishing was restricted to 200 tons.
D) International agreements limited the size of fish that could be caught and sold.
Changes in Earth's atmospheric carbon dioxide levels over geological time.
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