Q4. What other products could Pakistan turn into major exports?

Explain why components that are naturally found in air can be considered air pollutants.

Which of the following is not a challenge to instituting sound global environmental policies? a. most changes are inexpensive and easy to implement. b. elected leaders who support unpopular environmental issues often are not re-elected. c. economic considerations outweigh environmental ones in many societies. d. there is no way to enforce international environmental agreements.

The primary agent of contact metamorphism is