The concept of sustainability is best explained by below statement:
Natural resource use should be balanced with the needs of the environment and future generations because many resources are nonrenewable.
Explanation:
Sustainability is defined as utilizing the resources in such a way that it meets the need of the present generation without comprising the need of the future generation.
The concept of sustainability is mainly consists of three things : economic, social and environmental.
We can also term these concept as profit, people and planet, in general terms with respect to the concepts.
As we know, some sources of energy are nonrenewable. These sources, if exhausted, can't be replaced and so future generations won't be able to use them. So we need to be more judicious while using them.