2. Wind turbine
• I use wind turbine because it can produce electrical energy.
• I put wind turbine in the garden to generate electricity for
electrical appliance.
3. Solar panel on the roof top
• Solar panel absorb heat and light energy from sunlight.
• Some more solar energy covert to electrical energy for water
heater.
4. Window UV filter
• Window UV filter is use for filter harmful ray such as UVA,UVB
and UVC.
• These radioactive ray will cause skin cancer and cataract.
5. Ventilation
• Ventilation to remove hot air in the house, because hot air
have low pressure so hot air will move upward.
6. Grow green leaf on the outer
wall
• Green leaf absorb heat energy and light energy to carry out
photosynthesis.
• During photosynthesis green plant will produce oxygen to
surrounding.
