In what way are volcanic eruptions and meteoric impacts similar? a. both can cause global cooling. b. both can cause global warming. c. both emit oxygen gas into the atmosphere. d. both have a greater effect on weather than on climate.

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