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Which of the following are sources of CO2 and CH4 (methane)?

Decomposition by bacteria in swampy environments
Burning of fuels
Normal respiration/breathing of organisms
All of these are sources of CO2 and Methane

User ManuelMB
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1 Answer

21 votes
21 votes

Answer:

All of these are sources of CO2 and Methane

User Haris Nadeem
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