Review the relationship between the carbon cycle and climate.

[Free Registration/Login may be required to access all resource tools.] Explains the cycle of carbon through the atmosphere, geosphere, and biosphere.

Explains what the carbon cycle is and the basic steps in the cycle.

The importance of the carbon cycle, how it works, the sources of carbon, and the steps in the carbon cycle are explained here.

The oceans are a precious natural resource, part of Earth's carbon cycle. But what happens if the oceans absorb too much carbon dioxide? Many scientists are concerned that the increased absorption of carbon dioxide is causing them to...

Kids learn about the carbon cycle and how this nutrient travels through the ecosystem to sustain life on Earth.

There are many cycles occurring in all of the Earth's organisms, including the Earth itself. This brief page highlights some of those cycles, making readers aware of how many cycles there are, big and small.

Given scenarios, illustrations, or descriptions, the student will describe the flow of matter through carbon and nitrogen cycles and describe the consequences of disrupting these cycles.

Multi-lesson activity in which students conduct a life cycle assessment of energy and carbon dioxide used and produced in ethanol production.

This website describes trophic levels, transfer of energy between trophic levels, pyramids of ecology, and nutrient cycles within the environment.

Review some of the cycles that recycle matter through Earth's biospheres.

This site from NASA explains the meaning behind the different colors of the oceans. Gives information as to the role of phytoplankton in the color of the oceans and affects of the carbon cycle on the oceans.

This site provides a review ofoverall reaction of photosynthesis and outlines chemical reactions leading to the synthesis of carbohydrates.

An all purpose site with something for everyone. Learn about global warming and climate change, ask a scientist, take a quiz, or get a lesson plan!

Scholars explore the biology concept of the oxygen cycle. The tutorial consists of definitions and pictures about animal and plant gas exchange.

Ecosystems contain two kinds of commodities: matter (nutrients) and energy. Nutrients cycle through the ecosystem, available for repeated use by organisms. These cycles of use and reuse are called biogeochemical cycles. Energy instead is...