Acircular pool with a diameter of 18ft will have a uniform 4ft concerts walkway poured around it if the concrete cost $4.25 a square ft how much will it cost for the concrete?

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

About 140,000 japanese died in this japanese city when americans dropped an atomic bob at the end of world war ii