Rowland and Molina's work showed that ultraviolet light in the stratosphere causes CFCs to release ________ atoms
A) chlorine B) hydrogen C) fluoride D) carbon E) mercury
Answer: A
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Which of the following best describes the trend in the United States wetlands during this century?
a) An increase in coastal wetlands and a decrease in freshwater wetlands b) A decrease in coastal wetlands and an increase in freshwater wetlands c) An increase in coastal wetlands and an increase in freshwater wetlands d) A decrease in coastal wetlands and a decrease in freshwater wetlands
A device that transforms electrical energy to mechanical energy is a
A) generator. B) motor. C) transformer. D) magnet. E) none of the above
What are the impacts related to mining-related activities?
a. Collapse of land surface b. Subsidence pits and troughs over abandoned mines c. Release of harmful chemicals at the land surface d. Pollution due to weathering of the abandoned ores e. All of the above
________________ evapotranspiration is a theoretical term used to estimate the maximum loss of moisture through evaporation and transpiration
Fill in the blank(s) with correct word