Sustainability means providing for the humans of this generation while making sure it's still there for future generations. Some ways we do this is with conservation, maintaining an environment, habit or wildlife to make sure it will be in our future instead of becoming instinct. Carbon footprint is an example of a way we look after our environment, we keep track of the carbon dioxide and methane created by an entity.
Sustainability is important because if we are not sustainable we could lose an entire species.
