9.1.7

Greenhouse Gases & Human Activities

Test yourself

Human Activities and Greenhouse Gases

Certain human activities cause the atmospheric concentrations of greenhouse gases to increase, which may contribute to climate change:

Illustrative background for Burning fossil fuelsIllustrative background for Burning fossil fuels ?? "content

Burning fossil fuels

  • Burning fossil fuels releases carbon, in the form of carbon dioxide. This carbon dioxide had been stored away for millions of years previously.
Illustrative background for DeforestationIllustrative background for Deforestation ?? "content

Deforestation

  • As we cut down more and more trees, the global rate of photosynthesis will decrease.
  • Given that carbon dioxide is a reactant in the equation for photosynthesis, this means that less carbon dioxide will be removed from the atmosphere by this process.
Illustrative background for Landfill sitesIllustrative background for Landfill sites ?? "content

Landfill sites

  • The number and size of landfill sites is increasing.
  • This means that more mounds of waste are decomposing.
    • This process of decomposition releases methane, which is a greenhouse gas.
Illustrative background for Agriculture Illustrative background for Agriculture  ?? "content

Agriculture

  • Farm animals release methane during digestion.

Jump to other topics

1States of Matter

2Elements, Compounds & Mixtures

3Atomic Structure

4The Periodic Table

5Chemical Formulae, Equations & Calculations

6Bonding

7Electrolysis

8Groups of the Periodic Table

9The Atmosphere

10Reactivity Series

11Metal Extraction

12Acids & Alkalis

13Chemical Tests

14Physical Chemistry

15Organic Chemistry

Unlock your full potential with Seneca Premium

  • Unlimited access to 10,000+ open-ended exam questions

  • Mini-mock exams based on your study history

  • Unlock 800+ premium courses & e-books

Get started with Seneca Premium