As many as 12,000 people may have died as a direct or delayed result of the Great Smog of 1952
Indicate whether the statement is true or false
TRUE
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Which one of the following is NOT associated with hydraulic fracturing or "hydrofracking"?
A. pumping of water and chemicals into wells B. an increased price for natural gas C. special drilling techniques D. used to extract oil and natural gas from shale
Coal is still an important fuel in the United States, mainly used for producing electricity today
Indicate whether this statement is true or false.
City A is located on the shoreline of a large body of water. City B is located 100 km inland from the same body of water. In this scenario, which of the following statements is the most likely?
A. City A will have warmer temperatures in summer. B. City B will have colder temperatures in winter. C. The two cities will have similar temperatures only in summer. D. The two cities will have similar temperatures in both summer and winter.
Which of the following statements is true?
A) Carbon tetrachloride, CCl4 was once widely used as a degreasing solvent. B) Carbon tetrachloride, CCl4 is both toxic and carcinogenic. C) Dichloromethane CH2Cl2 is currently a widely used organic solvent. D) All three statements are true.