Witch one is it soo it the the question b. a,b, c,d

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.

Determine which of the two measurements in each set is lesser.10°f or 20°ca. 10-fb. 20°c

This diagram show the most important texts of.