Water

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Across
  1. 2. If I am extremely dry/cracked, it could mean you are dehydrated
  2. 4. I remove visible particles and solids from water
  3. 5. A word used to describe humans when they go too long without water
  4. 6. A food that can be used to show how filtration works
Down
  1. 1. Eliminates viruses, bacteria, or other non-visible harmful elements
  2. 3. Humans can typically only survive 3 days without me