What is the most abundant fossil fuel?
a. wood
b. oil
c. gas
d. coal?

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.

There is only one climate type in motion across the world at a time

Which of the following insects is a decomposer? a. mosquito. b. caterpillar. c. beetle. d. none of the above.