People and Nature

3. A collective term for harmful impacts of human activity on the environment.
6. A sudden and violent event in nature that causes great damage and loss of life.
9. A substance that pollutes something, especially water or the atmosphere.
11. When a resource is not depleted when used.
13. The practice of abstaining from the consumption of meat.
14. Capable of being decomposed by bacteria or other living organisms.
17. A biological community of interacting organisms and their physical environment.
18. A way of life that attempts to reduce the use of the Earth's natural resources.
20. The protection of animals, plants, and natural resources.
21. The protection of animal species and their natural environments.
22. A diet and lifestyle that avoids all animal products.
23. The illegal hunting or capturing of wild animals.

1. The amount of carbon dioxide emitted due to the consumption of fossil fuels.
2. Not harmful to the environment.
4. Species of (for example) plants and animals that are in danger of becoming extinct.
5. The practice of performing operations on live animals for scientific research.
7. Avoiding the depletion of natural resources to maintain an ecological balance.
8. The natural home or environment of an animal, plant, or other organism.
10. The state of the atmosphere at a particular place and time.
12. The periods of the year distinguished by special climatic conditions.
15. The action of clearing a wide area of trees.
16. Able to perceive or feel things.
19. Procedures performed on living animals for purposes of research.