The Greek root word 'bio' means life.

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Across
  1. 3. Viruses, bacteria or medical waste that can be a threat to life.
  2. 5. The vast variety of all diverse living things on Earth.
  3. 6. A record written about someone's life.
Down
  1. 1. Able to be broken down by living things.
  2. 2. A medicine that fights against living bugs.
  3. 3. A medical test that removes a small sample of cells or tissue from the body.
  4. 4. The study of life or living things.