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

Haemoglobin contains a protein called :

Vitamins :

Sugar is rich in :

Dirty stagnant water, decayed organic remains, dirty water from fish market, accumulation of water in plastic bags and coconut shells, all leads to:

Keep ourselves and our surroundings clean to keep away from:

Polyethane is a ___________ substance.

Garbage collected from our houses should be dumped in :

The study of teeth is called :

The cavity present in the tooth is called :