What is the solution or answer to 2+2

Need now! 45 points laboratory: weather map interpretation i need someone to answer the other two questions. i will give to the best answer!

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

Which of these has the least impact on the climate of a place