Write the full forms of the following abbreviations:

(a) TAB

(b) BCG

(c) DNA

(d) GMO

Give reasons :

(a) Every room in the house should get direct sunlight at least for a short time.

(b) Tinned and sealed food is not always safe to eat.

State the differences between Pasteurization and Sterilization

Would there be any bacteria in an aquarium?