___________pollution is the contamination of land by solid waste.

A Vector _____

The practice of keeping one self and one’s surroundings clean to maintain good health and prevent diseases.

_______mainly present in automobile exhaust.

Which of them is most likely to require the greatest amount of  carbohydrates in the diet?

 ________ is our first line of defense against  infection

The body gets  the rest in the form of ________

________ are the body’s main source of energy.

Which one is source of water pollution?

Unwanted or unpleasant  sound is termed __________.