Imagine a researcher aboard an oceanographic vessel collects samples from the water column, extending from the surface to 3000 meters depth. sample analyses shows that the water is isopycnal. which of the following statements correctly define what this means and why?

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.

Compare demographic and environmental effects of the columbian

What benefits does this type of farming have?