University Corporation for Atmospheric Research
Ucar: The Carbon Cycle
A comprehensive introduction to the carbon cycle. The cycle of atoms between living and non-living things is known as a biogeochemical cycle. The most common of these are the carbon and nitrogen cycles.
University Corporation for Atmospheric Research
Ucar: Carbon Dioxide
Learn all about Carbon Dioxide, an important constituent of our planet's air playing an important role in Earth's carbon cycle and photosynthesis.
NASA
Nasa Earth Observatory: Mystery of the Missing Carbon
This article discusses the mystery of the one to two billion metric tons of missing carbon from the global carbon budget. Scientists do not know where between fifteen and thirty percent of the carbon released each year disappears to, but...
University Corporation for Atmospheric Research
Ucar: Biogeochemical Cycles
The ways in which an element or compound such as water moves between its various living and nonliving forms and locations in the biosphere is called a biogeochemical cycle. All of the atoms that are building blocks of living things are a...
Oak Ridge National Laboratory
Human Genome Project: Biomass Fuels, Energy, Carbon and Global Climate Change
This site from the Human Genome Project of Oak Ridge National Laboratory (ORNL) provides facts and information about the use of biomass fuel and its impact on the carbon cycle.
Other
S Cool: Engery Flow and Nutrient Cycle
This website describes trophic levels, transfer of energy between trophic levels, pyramids of ecology, and nutrient cycles within the environment.
Nature Research
Nature Education: Energy Economics in Ecosystems
This article discusses how plants and microorganisms, until recently, have mostly controlled how much carbon dioxide is released into an ecosystem, and explains how this process works. Humans' burning of fossil fuels has upset the...
Other
The Incalculable Importance of Plankton
Plankton is a passively swimming plant life in a body of water known as the ocean. The Plankton that live in our ocean have one of the most important roles in the our Carbon Ecosystem. The importance of Plankton in our Ecosystem is...
Other
Science X: Research Illuminates Inaccuracies in Radiocarbon Dating
This article discusses research on the accuracy of radiocarbon dating. It was determined that the standards used for radiocarbon dating may be flawed due to variations to the radiocarbon cycle in different climatic regions of the world....
Morning Earth
How Life Works: Biosphere Is Process: Animal & Plant Gas Exchange
Scholars explore the biology concept of the oxygen cycle. The tutorial consists of definitions and pictures about animal and plant gas exchange.
University of Illinois
University of Illinois Extension: Energy and Ecosystems Use Some Lose Some
Life on Earth is possible because energy flows one way through ecosystems, while matter cycles endlessly. Water and elements, such as carbon, nitrogen, phosphorous, and sulfur are examples of matter that cycles through ecosystems.
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