1. Sustainability

2. Sustainable development:
Development that meets the needs of the present without compromising the ability of future generations to meet their own needs.

3. Ecosystems are sustainable:
If they perpetuate themselves indefinitely and require little or no additional materials each year.

4. Sustainable ecosystem:
An ecosystem that is capable of withstanding pressure and giving support to a variety of organisms.

5. Many human activities are not sustainable:
Depend on continual growth of population
Deplete non-renewable natural resources.
Produce polluting wastes

6. To reduce our impact on the environment some things we need to do are:
Use resources more efficiently and effectively (get more from less)
Reduce, re-use, re-cycle.
Restore damaged environments
Conserve scarce resources
Reduce human impact on the environment
Reduce consumption