By understanding how natural forces affect the environment ,what can earth scientists do?

Which of the following is true about fossils? a. the relative age of fossils cannot be determined from their position in sedimentary layers. b. fossils found in lower layers of sedimentary rock are as old as fossils found in upper layers of sedimentary rock. c. fossils found in upper layers of sedimentary rock are older than fossils found in lower layers of sedimentary rock. d. fossils found in lower layers of sedimentary rock are older than fossils found in upper layers of sedimentary rock.

Most countries in the middle east must import a majority of their a. gasoline b. oil c. food d. water

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