1. Social-scientific issues 

• Use of non-renewable energy
• Use of fossil fuels that emit greenhouse gases

2. Examples of several socio-scientific issues that are related to the environment:

• Deforestation
• Global warming
• Air polution
• Indiscriminate waste disposal
• Water pollution

3. Socio-scientific issues of burning of fossil fuels produce greenhouse gases that cause global warming and extreme climate changes.

4. Source of energy

• Non-renewable energy 
  • Examples: fossil fuels (petroleum, natural gas, coal), nuclear energy
  • Disadvantages:
    • supply become scarce
    • environmental pollution (carbon monoxide & carbon dioxide)
• Renewable energy 
  • Examples: Hydro, solar, wind, geothermal, wave
  • Advantages: 
    • clean energy
    • green energy
    • pollution free

5. Application of green technology 

• Wind energy source replace fossil fuel in the future.
• Hydro energy source become one of the main energy sources in the world to generate electricity.
• Solar energy source has potential to be developed in Malaysia.
• Geothermal energy source replace fossil fuel.