Cooperation to limit gases that deplete the ozone layer was ...

[cherise1989]

Cooperation to limit gases that deplete the ozone layer was possible because
 
  a. science on this problem became indisputable.
  b. the rich countries decided to subsidize the economic costs of this treaty.
  c. of U.S. influence.
  d. of the role of the United Nations in this issue.

Question 2

The Montreal Protocol is significant because it
 
  a. was the most sweeping environmental treaty in history.
  b. focused on environmental problems between Canada and the United States.
  c. emphasized for the first time biological diversity.
  d. was the first global environmental treaty.

[fffftttt]

Answer to Question 1

a

Answer to Question 2

d

[cherise1989]

YES! Correct, THANKS for helping me on my review

[bitingbit]

Thanks for the timely response, appreciate it