Water Pollution

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Across
  1. 3. Used to keep pests away
  2. 5. When we do not take care of our water, they get _____
  3. 6. This forms a layer on the surface of water
  4. 7. Aquatic plants need this to make food
Down
  1. 1. Litter causes health problems to them
  2. 2. We should throw our rubbish here
  3. 4. A common polluted area near water
  4. 5. A common type of litter found in the ocean