You clap your hands, and instantly you hear an echo of the clap. what does this tell you about the size of the room?

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.

What type of coastline is commonly found along the western side of the america’s

Which city area has the most accessible oil reserves a) caspian sea b) siberia c)arctic coast d)lake baikal