What caused the interior of earth to separate into layers? a.  a decrease in the rate of rotation of earth b.  the gravitational pull on materials of varying densities c.  variations in heating by the sun due to earth's tilt d.  collisions with meteors and comets?

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.

Can someone list any possible solutions to air pollution ?

India's population is made up of percent hindus.