Why we need it?
Compare with last century, temperature has had increased in most area over the earth.
One of the reasons of this condition is because the C02 which is type of greenhouse gas caused by burning coal, gas and wood in order to produce energy.
With the change of temperature, it will occur many changes which are harmful in our ecosystem.
Therefore, finding new sources of energy becomes more important to prevent hazard from the change of temperature.
In case, renewable resources play a vital role.
Renewable resources will not be exhausted, and it can lighten the use of coal, gas and wood.
Therefore, many countries have started planning to develop these resources.
Is it common?
Here is a chart showing the percentage of renewable resources using among countries:
Now I will tell you more about the pros and cons of each resource, and let you know more about it.
