Question

1. An organ and an organ system
2. Small intestine and large intestine
3. Milk teeth and permanent teeth
4. Incisors and canines
5. Enamel and plaque​

Answer 1

Answer:

1. An organ system is a group of organs that work together to perform one or more functions. Each organ has a specialized role in a plant or animal body, and is made up of distinct tissues.
2. The permanent teeth are visible throughout a person's lifetime.

...

Give the difference between milk teeth and permanent teeth.