Which activity demonstrates chemical weathering? A grinding of talc into a powder B freezing of water in the cracks of a sandstone sidewalk
C dissolving of limestone by acid rain
D abrasion of a stream bed by tumbling rocks

Which direction does the energy flow in this energy pyramid ?

Differentiate renewable and nonrenewable resources

What is the main reason that attitudes are more often revealed in spoken rather than written language? a. in writing, we try to put the "best face" on what we write. b. we speak far more often than we write. c. in writing, we can more easily conceal our attitudes. d. in spoken language, we are often careless in our use of words.