Which item is not considered electromagnetic energy? a. visible light b. delta radiation c. x-rays d. ultraviolet light

What is the speed of sound in water

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

Name the two rivers that run through the fertile crescent. how were the rivers both positive and negative to societies of the fertile crescent?