What are characteristics of renewable energy and characteristics of nonrenewable energy?

Answer 1

Renewable energy:

• comes from the sun, the wind, the waves and the heat deep down in the earth
• is free
• keeps coming back next day even if you use as much as you can today
• doesn't cause pollution
• doesn't emit carbon dioxide, a greenhouse gas

Non-renewable energy:

• comes from coal, oil and natural gas
• won't last for ever
• gives off carbon dioxide when burns, and other polluting chemicals
• contributes to greenhouse gas in the atmosphere, increasing global warming
  

Answer 2

Renewable resources like wind power, solar power, wave and tidal power, hydro power, ocean thermal power and geothermal power are very attractive as energy sources.

• No greenhouse gas emissions
  
• No polluting emissions of any kind
• No costs for buying or transporting the fuel
• Unlimited supplies of the fuel.

Answer 3

Several characteristics are common to renewable energy resources. One is that they are generally all-natural, with examples including water, wind and electricity.