What caused president richard nixon to act on environmental issues? . a. nixon had always been an environmentalist.. b. the environmental protection movement was supported by public.. c. the republican party supported environmental protections.. d. smog in london killed 12,000 people in 1952.

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during the 20th century, the role of the vice president has evolved into more of an executive branch position. now, the vice president is usually seen as an integral part of a president's administration and presides over the senate only on ceremonial occasions or when a tie-breaking vote may be needed.