The transfer of heat energy by the circulation of warm air is called
a
thermal convection.
b
thermal conduction.
c
cyclonic conduction.
d
atmospheric conduction.

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.

Which of the following insects is a decomposer? a. mosquito. b. caterpillar. c. beetle. d. none of the above.

What could the united states of america do to improve their status? name at least 3(ap human geography)