In a 2005 report on the ecological health of coastal areas in the lower 48 states, the EPA classified ____ estuaries as threatened or impaired.
a. one of two
b. one of four
c. one of ten
d. four of five
e. nine of ten
Answer: D
In a 2005 report on the ecological health of coastal areas in the lower 48 states, the EPA classified ____ estuaries as threatened or impaired.
a. one of two
b. one of four
c. one of ten
d. four of five
e. nine of ten
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