The shadow zone exists because ?
O
A. seismic waves cannot travel through solid rock.
O
B. sunlight blocks out P waves in certain regions.
O
C. P waves refract as they travel through Earth.
D. the mantle and core are composed of the same material.

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