Mi poor sorry for no points

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.

Determine which of the two measurements in each set is lesser.10°f or 20°ca. 10-fb. 20°c

Give three differences between oceanic and continental crust brainliest will be awarded