By this you are referring to the potential for greenhouse warming caused by methane? Methane is supposed to be able to trap more infrared radiation per molecule than carbon dioxide.

WIKIPEDIA:

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Pre-human global warming
It is thought by some geologists that the Earth experienced global warming in the early Jurassic period, with average temperatures rising by 5 °C (9 °F). Research by the Open University published in Geology (32: 157–160, 2004 [24]) indicates that this caused the rate of rock weathering to increase by 400%. As a result of this, carbon dioxide levels dropped back to normal over roughly the next 150,000 years.

Sudden release of methane clathrate (a greenhouse gas) has been hypothesized as a cause of past global warming. Two events possibly linked in this way are the Permian-Triassic extinction event and the Paleocene-Eocene Thermal Maximum. However, warming at the end of the last ice age is thought to not be due to clathrate release [25].

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If I am not gullible enough to take this test, do I automatically score 100%