The gas that shows the most variation from place to place and from time to time in the lower
atmosphere is:
a. ozone (O3).
b. carbon dioxide (CO2).
c. water vapor (H2O).
d. methane (CH4).
e. argon (Ar)
c
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Which of the following is a natural soil buffer that is abundant in the midwestern United States and helps to reduce the amount of acidification of lakes in that region?
A) Granite B) Limestone C) Sand and gravel D) Mosses and algae in the soil
In 1947 a Hindu family living in Pakistan or northwestern India likely felt pressure to migrate
A) to southern India and then to Sri Lanka. B) to the south, southeast, or east toward Muslim-controlled areas. C) to the northeastern border and then to Sri Lanka. D) to the south, southeast, or east away from Muslim-controlled areas. E) to a large city such as New Delhi.
The prevailing westerlies occur in which of the following regions?
A) Equatorial (0 to 5 degrees) B) 5 to 30 degrees C) 30 degrees D) 30 to 60 degrees E) 60 degrees F) 60 to 90 degrees G) Poles (90 degrees)
Which country was the first to establish a permanent prescense in North America?
a. England
b. France
c. Holland
d. Spain