What do we call the circular path that the Earth takes as it moves around the Sun?

Compounds which are found naturally in the earth are called: a. ores b. composites c. rocks d.minerals

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

If scientists only detect p waves in a certain layer of earths interior what does that tell us?