31 Mushrooms are some of the

Rarest species of fungi

32 Only some kinds of Mushrooms are

Poisonous

33 What is asbestos?

A fire resistant fibrous mineral

34 The gas that is mixed in water for washing purpose is

Carbon Monoxide

35 Telephone was invented by

Graham Bell

36 Hunger Centre in human body is located in

The brain

37 ‘‘Watch your calories.’’ What does this means?

To eat according to requirement

38 Vitamin A found in abundance in animal fats help animals in

The prevention of infection

39 A vitamin that an infant needs for the development of bones and teeth is

Vitamin D

40 Humans have descended from marine-life which had sea water as their body fluid. This characteristic explain why we need

Salt