Definition of regions are blank and are based on blank five themes

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.

In a economy individuals answer the three basic and the central authority or leaders have little say in the economy.

The blue segment below is a diameter of oo. what is the length of the radius of the circle?