Expats migrate
Indicate whether this statement is true or false.
TRUE
Environmental & Atmospheric Sciences
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PCBs (polychlorinated biphenyls) ________.
A. remain in the sediments for unknown periods of time B. are no longer manufactured or used in the U.S C. are still entering the environment from previous use D. were in greatest use in the early 1960s E. All of these are correct.
Environmental & Atmospheric Sciences
Which country has phased out subsidies on coal?
A. Great Britain B. the United States C. Japan D. China E. Russia
Environmental & Atmospheric Sciences
LiDAR is an example of passive remote sensing
Indicate whether the statement is true or false
Environmental & Atmospheric Sciences
What is the centerpiece of China's family planning and birth control policy?
A. generous adoption policy B. free birth control C. one-child families D. sterilizations E. abortions
Environmental & Atmospheric Sciences