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CRITICAL THINKING ACTIVITY: THE METHANE CYCLE

Student Sheet 1 CRITICAL THINKING ACTIVITY: THE METHANE CYCLE WHAT IS METHANE ? METHANE is a chemical compound with the molecular formula CH4. It is the main component in natural gas. METHANE is considered the simplest of alkanes, compounds that consist only of hydrogen (H) and carbon (C) elements. METHANE is an odorless, colorless, tasteless gas that is lighter than air. When METHANE burns in the air it has a blue flame. In sufficient amounts of oxygen, METHANE burns to give off carbon dioxide (CO2) and water (H2O). When it undergoes combustion it produces a great amount of heat, which makes it very useful as a fuel source. METHANE AS A GREENHOUSE GAS METHANE is a very effective greenhouse gas. While its atmospheric concentration is much less than that of carbon dioxide, METHANE is 28 times more effective (averaged over 100 years) at trapping infrared radiation. The atmospheric residence time of METHANE is approximately 9 years.

sources include the anaerobic (oxygen-free) digestion in marine zooplankton and fish, and also from methane produced in sediments and drainage areas along coastal regions. ... produce methane include fossil fuel production, the livestock industry, rice cultivation, biomass burning, and waste management. These activities release

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gml.noaa.gov

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gml.noaa.gov

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biogas.ifas.ufl.edu

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www.valorgas.soton.ac.uk

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