When the milk teeth fall off, a new set of ------ teeth grow.

Teeth are of

The tiny opening found in the leaf is

In amoeba the undigested food is thrown out of the body through its.

Milk teeth grow when a baby is about ----- old.

Amoeba lives in the

The digested food reaches the amoeba by

Salivary glands secrete a watery fluid called.

Saliva contains an enzyme called.

Food provide all living organisms _____  to do their life activities.