Scientists find a new mid-ocean ridge forming along an underwater mountain range. What can scientists assume based on this finding

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.

Why is immigration so important today?

Why do farmers in different regions use different farming techniques