Our Environment

1234567891011121314151617181920
Across
  1. 6. Any substance that causes pollution is
  2. 10. Animals that eat the tertiary consumer
  3. 11. consumers are also called
  4. 13. _____ occurs when the environment gets contaminated by wastes, chemicals and harmful substances
  5. 16. things that can be easily decomposed by natural agents
  6. 19. Each of the levels in the food chain
  7. 20. The process by which waste materials are used to make new products
Down
  1. 1. burning of solid waste in incinerator
  2. 2. Producers are also called
  3. 3. The sequence of who eats whom in an ecosystem
  4. 4. organisms that are able to produce their own food
  5. 5. Animals which eat other animals
  6. 7. Animal that eat the secondary consumer
  7. 8. things that cannot be decomposed by natural agents
  8. 9. community of living and non-living things that work together.
  9. 12. The surroundings or space in which a person, animal, or plant lives, is known as
  10. 14. ecosystem Ecosystems outside the water body and on land
  11. 15. Animals which eat plants or plant products
  12. 17. ecosystem ecosystem in water
  13. 18. process of degradation of organic wastes into manure by the action microorganism