During the Pleistocene epoch, continental glaciers alternately advanced and retreated over large
portions of North America and Europe.
a. true
b. false
a
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In the usage of soil scientists, a loose, noncemented transported deposit below the root zone would be called:
a. soil b. unconsolidated material c. parent material d. colluvium
What percentage of land in the United States is owned by the federal government?
A. 50 B. 30 C. 10 D. 60
In the western U.S., thick, scrubby, Mediterranean-type woodland is called ____________________
Fill in the blank(s) with correct word
Rachel Carson's Silent Spring
A) focused on the negative effects of chemical fertilizers. B) led to the banning of DDT and other harmful chemicals in the United States. C) led to international rules prohibiting the use of harmful pesticides in developing countries. D) did major damage to the environmental movement in the United States.