Earth day

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Across
  1. 2. a term for waste that can be broken down by natural processes
  2. 3. a material commonly used for single-use items that harms the environment
  3. 4. a term for they layer of gases surrounding the earth
  4. 8. the largest ocean on earth
  5. 9. the process by which plants make their own food using sunlight
  6. 10. this renewable energy source comes from the sun
Down
  1. 1. the movement of water from the ocean to the atmosphere and back again
  2. 5. the name for the chemical symbol O
  3. 6. a planet in our solar system known for its blue appearance
  4. 7. the process of planting trees to restore or create a forest