Environment Puzzle Greenpeace

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Across
  1. 4. The layer of gases that surrounds the Earth and helps regulate its temperature
  2. 7. A natural resource that is mined from the Earth and used to make a variety of products
  3. 8. The variety of different species of plants and animals in a particular area
  4. 9. The practice of planting trees to replace those that have been cut down
Down
  1. 1. The process of breaking down organic waste by microorganisms
  2. 2. The natural process by which nutrients are returned to the soil after plants and animals die and decompose
  3. 3. The process of removing salt and other minerals from seawater to make it suitable for human use
  4. 5. A type of rock that is formed from the remains of plants and animals over millions of years
  5. 6. The process of using less water by using more efficient technologies and practices