The major cause of the acceleration in the rate of legal immigration to the United States since the 1970s has been the __________.
a. poor state of the world economy
b. depressed socioeconomic conditions in foreign countries
c. unstable political conditions in the Mideast
d. failure of foreign countries to solve the problem of homelessness
e. gradual liberalization of immigration laws
Question 2
One of the concepts basic to understanding environmental stress emphasizes that everything is related to, and depends upon, everything else. This is captured by the phrase __________.
a. the organic network
b. the web of life
c. all or nothing at all
d. the whole is greater than the sum of its parts
e. the network of living things
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