Okay i have to write a report about water pollution, can someone . if you know a good place for information let me know. or any information about it.

Compounds which are found naturally in the earth are called: a. ores b. composites c. rocks d.minerals

How does central place theory explain patterns in the size and distribution of cities?

Which events occurred during the space race? check all that apply. (a) nasa was established. (b) yuri gagarin orbited earth. (c) the soviet union launched salyut. (d) the united states launched skylab. (e) the united states launched explorer 1.