If we use it up faster than it renews. Wood is a good example. Wood is usually renewable, because we can plant more trees that will replace the ones we have cut down. But if we don't plant enough...
An energy resource like coal, oil or natural gas is called non-renewable because it does not renew itself every day like wind power or sunlight. We burn oil, and it is finished. Gone. After that we...
A renewable resource that is being consumed at the same or lesser rate than it is being created. Sunlight is an example. A non-renewable resource is a resource that is not being created as fast as it...
Renewable refers to things like wind or sunshine, which keep on coming even if we use them to produce energy.
Other things get used up and don't renew.
So silver is non-renewable. When we use...
There is no single thing that is renewable and non-renewable at the same time. That's a contradiction in terms. Some kinds of wood (fast growing pine plantations, for example) are renewable, while...