Conventional energy sources include coal, petroleum and natural gas. These energy sources currently fulfill most of our energy demands, including electricity, heating, and transportation fuel. These have two important drawbacks. These fuels, also known as fossil fuels, are limited in quantity. Since we are heavily reliant on fossil fuels and they take millions of years to form, we are running out of them. Secondly, fossil fuels generate carbon dioxide, a major greenhouse gas thought to be responsible for global warming. Thus, limited quantities and greenhouse gas emissions make conventional fuels somewhat undesirable.
Alternative energy sources are mostly renewable, including solar, wind, and geothermal energy. These energy sources do not generate any greenhouse gases and hence do not contribute to global warming. Additionally, as renewable sources, they are practically unlimited in quantity, meaning they could help solve our impending energy crisis.
Hope this helps.
No comments:
Post a Comment