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CO₂ vs CH₄ – Greenhouse Gases - Coggle Diagram
CO₂ vs CH₄ – Greenhouse Gases
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Overview
Greenhouse gases help Earth stay warm
Too much → global warming
Main gases: Carbon dioxide (CO₂) and Methane (CH₄)
Emission & Lifetime
CO₂
~80% of human-made emissions in the U.S.
Stays in atmosphere for thousands of years
Current level: 400+ ppm (highest in hundreds of thousands of years)
CH₄
~11% of emissions in the U.S.
Lasts about 10 years
Can be reduced within one generation
Sources
CO₂
Natural: plant decay, volcanoes
Human: burning coal, oil, gas
CH₄
Natural: wetlands, melting permafrost, microbes
Human: cattle farming, landfills, natural gas production
Global Warming Potential (GWP)
GWP is 30% higher
More effective at trapping heat
CH₄ is stronger than CO₂
Trends
CO₂: stable due to less coal and more clean energy
CH₄: increased 30% in the past decade
Possible causes: permafrost melt, cattle, gas production
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Conclusion
CO₂: biggest concern due to amount and long-term effect
CH₄: more powerful and rising fast
Both must be controlled to fight climate change
New words
abundant : dồi dào
eruption : sự phun trào
wetland : vùng đất ngập nước
microbial : vi sinh vật
pẻmafrost : băng vĩnh cửu
determine : quyết tâmz