Fossil Fuels and the Carbon Cycle
Chemical elements essential to life are available in limited amounts and must be cycled between living organisms and the environment. Because these processes involve both chemical and biological processes, they are called biogeochemical cycles. Elements such as carbon (from carbon dioxide), hydrogen, and nitrogen move between the atmosphere and organisms, while elements such as phosphorus, calcium, potassium, magnesium, sodium, and iron enter into organisms from the soil. The four primary biogeochemical cycles are water, nitrogen, carbon, and phosphorus.
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Funded by the following grant(s)
My Health My World: National Dissemination
Grant Number: 5R25ES009259
The Environment as a Context for Opportunities in Schools
Grant Number: 5R25ES010698, R25ES06932
Foundations for the Future: Capitalizing on Technology to Promote Equity, Access and Quality in Elementary Science Education