What type of volcano will most likely form when intermittent eruptions of different intensities take place over a long period of time and layers of ash and lava pile up?

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 season has the least amount of rain in the northern latitudes

Describe the four major spheres of the earth system; identify the parts of the earth they each represent. explain what is meant by the "earth system."