calculus 2

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Across
  1. 3. something with no fixed shape, like a blob of slime.
  2. 4. a liquid holding way more of something than it normally can.
  3. 5. a spot where bacteria gather and start causing trouble.
  4. 8. a microbe that can’t stand oxygen, like a vampire hiding from sunlight.
  5. 9. a microbe that needs oxygen to live, like a tiny scuba diver who can’t leave the air tank.
  6. 10. a white blood cell that protects your body from invaders.
Down
  1. 1. a chemical that helps stop crystals from hardening into calculus.
  2. 2. the natural mineral that makes your teeth hard and strong.
  3. 6. the structure or background that holds things together.
  4. 7. hardened plaque stuck on your teeth (not the math class).
  5. 8. something that’s made without any cells at all.