1
The ability to maintain or support an ecological balance without exhausting natural resources or causing severe ecological damage.
2
The act of preserving, guarding, or protecting the natural environment, wildlife, and resources.
3
A community of living organisms in conjunction with the nonliving components of their environment.
4
The presence in or introduction into the environment of a substance which has harmful or poisonous effects.
5
The variety of life forms on Earth, including the different plants, animals, and microorganisms, their genes, and the ecosystems they form.
6
Energy that is collected from resources that are naturally replenished on a human timescale, such as sunlight, wind, rain, tides, waves, and geothermal heat.
7
The action of clearing a wide area of trees.
8
The weather conditions prevailing in an area in general or over a long period.
