Guess What am I?

123456
Across
  1. 2. someone who takes pictures of people and places
  2. 4. someone who cooks at the restaurant
  3. 6. the first meal of the day, usually eaten in the morning
Down
  1. 1. someone you don't know
  2. 3. the damage of tooth by bacteria.
  3. 4. the amount of money needed
  4. 5. tiny living things that can make you sick