Science project

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Across
  1. 2. vital for environment
  2. 3. number of shapes
  3. 5. Retrovirus does what
  4. 7. what makes bacteria
Down
  1. 1. some viruses cause
  2. 3. staph bacteria craves human what
  3. 4. what does soil bacteria help you to do
  4. 6. use host cell