Environment

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Across
  1. 3. The life supporting system where plants and animals are interdependent and interrelated to each other.
  2. 4. The domain of water.
  3. 6. The narrow zone of contact between land, water and air.
  4. 7. The system that involves exchange of goods without the use of money.
Down
  1. 1. The solid crust or hard top layer of the Earth.
  2. 2. The thin layer of air that surrounds the Earth.
  3. 5. The place, people, things and nature that surround any living organism.
  4. 7. The world of living organisms.