Sustainable energy vs Unsustainable energy

What is Sustainability

Sustainability is limiting the use of a resource to a certain rate so we can ensure it is able to renew itself

How are these sources of electricity sustainable?

These electricity sources are sustainable because all of these are renewable sources. We will never run out of these things any time soon the sun will always be around, the sun will always be around and water does not look like it is going to run out any time soon in Canada. So we can insure that we can use it for future purposes and that is how these energy sources are sustainable

How is this source of electricity not sustainable

This source of electricity is not sustainable because the rate we are using the fuel for thermal electricity, the uranium for nuclear electricity and the coal we will not have any left for future uses plus these things are not renewable. That is why these sources of electricity is not sustainable.
Stop Motion Film: Renewable vs NonRenewable Energy Sources