What is the most common cause of erosion

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

The poles appear to be slightly flattened in a robinson projection. question 1 options: true false

What's a recharge area? a. the part of an aquifer where groundwater meets a lake or stream b. the part of an aquifer where surface water reaches the water table c. the part of an aquifer that's located between two aquicludes d. the part of an aquifer that's located at a lower elevation