To minimise garbage we should :

Which of the following rot completely and do not smell ?

The pharmaceutical chemical we use to fight fever is :

A low - lying open area,which may be used to dump garbage is called:

Polyethane is a ___________ substance.

Garbage collected from our houses should be dumped in :

Unwanted or unusable remains or by - products of materials or food are known as:

Movement of our body is helped by :

The study of teeth is called :