Environment and Nature

12345678
Across
  1. 5. The process of planting trees to restore a forest (13 letters)
  2. 8. fuel A fuel formed from the remains of ancient plants and animals (9 letters)
Down
  1. 1. The type of energy derived from Earth's heat (11 letters)
  2. 2. A forest with high rainfall, usually near the equator (9 letters)
  3. 3. Warming A gradual increase in Earth's average temperature (12 letters)
  4. 4. cycle The movement of water through evaporation, condensation, and precipitation (10 letters)
  5. 6. The area where a river meets the sea (7 letters)
  6. 7. The variety of living organisms in a particular area (13 letters)