How is the clean air act of 1970 related to a principle established by the supreme court in the 1800s?
1.the clean air act was overturned through judicial review.
2.the clean air act is based on an implied power of congress.
3.the clean air act is an example of state regulation.
2.the clean air act is an example of the interstate commerce regulation.

In 1914, alabama produced 1.7 million bales of cotton, but three years later produced only 515,000, bales. meanwhile, in georgia, 5.2 million acres of land was dedicated for cotton production in 1914, but by 1923 there were just 2.6 million acres used for growing cotton. all of this was the result of the work of a tiny insect: the boll weevil. alabama and georgia first felt the effects of the boll weevil at different times. what would account for this difference in timing? a) the infestation moved from west to east. b) the infestation moved from east to west. c) georgia had better ways to deal with the problem. d) alabama was further from the insect's point of origin.