Environment and nature crossword

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Across
  1. 3. The process of converting waste materials into reusable materials.
  2. 4. Energy The use of energy sources that are naturally replenished, such as solar or wind power.
  3. 5. The introduction of harmful substances into the environment.
  4. 6. Change Long-term changes in temperature, precipitation, and other atmospheric conditions on Earth.
Down
  1. 1. The protection and preservation of natural resources.
  2. 2. The cutting down of trees in large areas, often resulting in damage to the environment.