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Methane - Wikipedia
Methane | Definition, Properties, Uses, & Facts | Britannica
Methane (CH4) - Definition, Structure, Properties & Uses with …
Greenhouse gas - Methane, Climate Change, Emissions | Britannica
Methane - NIST Chemistry WebBook
Global methane emissions from rivers and streams | Nature
Methane - NIST Chemistry WebBook
Facts about Methane | UNEP - UN Environment Programme
Methane - Climate Change: Vital Signs of the Planet
What Is Methane? | Methane Greenhouse Gas Facts - Popular Mechanics