Question

Fill in the blanks:
1. which is a micro-organism that is used to turn milk into curd.
2. which can not live or reproduce on its own
3. The thin sticky layer of germs on the tooth is called
4. A hole in the tooth is called .
5. The part of the teeth inside the gum is.​

Answer 1

1. Lactic acid bacteria

2. virus

3. plaque

4. tooth cavity

5. crown

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