In an essay, discuss the environmental risks associated with hydraulic fracturing (fracking).
What will be an ideal response?
Fracking is a new way in which natural gas can be extracted from deep layers of shale. Critics of fracking point to a host of potential environmental problems. These include pollution of local groundwater supplies, the generation of earthquakes because of the movement of deep layers of rock and the tremendous amount of water which is needed to engage in the process of hydraulic fracking.
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Synfuels produced from coal are
A. in short supply. B. available only in the United States. C. generally expected to play a minor role as an energy resource due to the high cost and low net energy yield. D. a much cleaner alternative to coal. E. readily available in underground reserves.
Ultraviolet radiation levels have ____ over the United States since the 1980s
A) declined B) increased C) stayed the same D) varied
Many of the United States old heavy industries have expired in Illinois, Indiana, Michigan, Ohio, and Pennsylvania. This area has come to be known as the _____ ______
Fill in the blank(s) with correct word
Ecologists study:
A. The Earth and its processes B. Living things and their genetic makeup C. The physical world and its processes D. Relationships between organisms and their environment E. Genetic patterns and the chemistry in them