The first law at the national level to have a substantial impact ...

[colton]

The first law at the national level to have a substantial impact on air pollution in the United States was the ________.
 
  Fill in the blank(s) with the appropriate word(s).

Question 2

With reference to urban heat islands, the temperatures in major metropolitan areas sometimes exceed those of the surrounding areas by as much as
 
  A) 2 degrees C.
  B) 5 degrees C.
  C) 10 degrees C.
  D) 12 degrees C.

[Shshxj]

Answer to Question 1

Answer: 1963 Clean Air Act

Answer to Question 2

Answer: D

[colton]

Wow, this really help

[ASDFGJLO]

Thanks for the timely response, appreciate it