Formed 5. (20 points) calculate the sinking velocity for silt (0-6), fine sand (0-2.5), and gravel (p -2.5) in seawater and assuming stokes settling. (be careful with units! state any assumptions you've made to do these calculations).

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.

Which of the following regions suffers the most from acid rain? a. the area around vancouver c. the area below atlanta b. the area below detroit d. the area above montreal

The inner planets mercury, venus, earth, and mars were formed by