Changes in our environment

12345678910
Across
  1. 7. a type of waste that can not be decomposed by other living organisms.
  2. 9. .... gas required for photosynthesis
  3. 10. waste produced by plants or animals
Down
  1. 1. can cause noise pollution
  2. 2. also known as natural gas
  3. 3. Substance that causes pollution
  4. 4. Retention of extra heat by the earth
  5. 5. Addition of pesticide can cause
  6. 6. compressed natural gas
  7. 8. celebrates on first July