Environment

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Across
  1. 4. Contamination of water bodies by harmful substances.
  2. 5. The layer of soil where plants grow and obtain nutrients.
  3. 6. The mixture of gases that surrounds the Earth.
Down
  1. 1. The layer of soil below the topsoil.
  2. 2. The removal of trees from an area.
  3. 3. The layer of Earth's atmosphere where weather occurs