Weekend Homework

What do scientists call global cycles that recycle elements within and among ecosystems? What global spheres are involved in these cycles? Hint: Look back to chapter 3.

What is an example of a biological processes found in biogeochemical cycles? What global sphere can you find the biological process that you chose?

What is an example of a geological process found in biogeochemical cycles? What global sphere can you find the geological process that you chose?

What is an example of a physical or chemical processes found in biogeochemical cycles? What global sphere can you find the physical or chemical process that you chose?

What is an example of a human activities found in biogeochemical cycles? What global sphere can you find the human activity that you chose? How does that activity affect the global sphere you chose?

In your own words describe the water cycle. What is it? What global spheres are involved and what processes are involved that move water from one global sphere to the next?