The peak above is part of the a chain of volcanic mountains that runs through the middle of central america. a. sierra madre occidentals b. andes mountains c. sierra madre orientals

The earth's internal process which drives seafloor spreading is

Impressions of tropical swamp plants were observed on rocks in polar regions. the impressions were dark black imprints, which means the fossils are examples of ( 1 ) the fossils tell us that polar regions ( 2 ) ( 1 ) a. carbonization b. mineralization c. trace fossils ( 2 ) a. had tropical plants that can grow in ice b. might have had a diffierent climate in the past c. will have abundent vegitation

What factors contribute to american farming success?