Environment

1. Animals, birds, insects, etc. that are wild and live in a natural environment.
4. Power derived from the utilization of physical or chemical resources, especially to provide light and heat or to work machines.
6. Things that you throw away because you no longer want or need them.
11. An area where wild birds or animals are protected and encouraged to breed.
12. A form of air pollution that is or looks like a mixture of smoke and fog, especially in cities.
13. To treat things that have already been used so that they can be used again.
15. The act of using something in a careless or unnecessary way, causing it to be lost or destroyed.

2. A form of energy from charged elementary particles, usually supplied as electric current through cables, wires, etc. for lighting, heating, driving machines, etc.
3. The natural world in which people, animals and plants live.
5. The place where a particular type of animal or plant is normally found.
7. A set of animals or plants in which the members have similar characteristics to each other and can breed with each other.
8. That can be used again.
9. A chemical element, gas that is present in air and water and is necessary for people, animals and plants to live.
10. The protection of the natural environment.
14. The regular pattern of weather conditions of a particular place.