How might a renewable energy source become nonrenewable?

Non-renewable energy source : those source which can't be replenished .These will run out if not used judiciously. These includes : Fossil fuel ,coal , petroleum , natural gas

Renewable energy : Those source which are naturally replenished and can't run out in human life -time . Example : Sunlight , wind , rain etc.

Explanation:

Theoretically it is not possible that a renewable energy source become a non-renewable source.

Now , take the example of Water. Water is a renewable energy source because of water cycle. Due to water cycle the amount of water lost from earth surface comes back to it in the form of Rain. Hence water should not run out .  

But if we consider Underground water . It is only 1.7 % of the total earth water .

Now ,by 2020 many Populated cities run out of underground water . You may ask , How is it possible since water is renewable?

The reason is because of construction , overgrazing , agriculture The rainwater can't penetrate deep in earth . So amount of under ground water is decreased.

Overpopulation is also another reason. It result into more consumption of underground water .

So , at this point we can say that underground water has become non - renewable.

Hence there are possibility (very low) that a particular renewable source become non-renewable because of drastic human - activities like : Over -consumption of sources , overgrazing (these leads to climate change which in turn disturb the natural cyclic processes. Hence degrade the renewable sources)

explanation:

venn diagram is pictorial representation with of circles showing the relation between two finite sets or things. the intersection part of two circles conveys the relation present in between those sets or things.

here in the venn diagram of sand and salt two circles represent sand and salt. but the area falling under the intersection of these circle represents the mixture of sand and salt.

so, in a venn diagram the mixture will be placed in a middle that is in between the intersection of two circles.