Question

Q 14 A student studies that the 1 poin
hair in a sheep helps it to
survive the cold. Which of
these explains how the hair
keeps the animal warm?
O
(a) They trap a lot of air which is a
poor conductor of heat
(b) They trap dust particles which is
a good conductor of heat
O O
(C) They trap a lot of bacteria which
is a poor conductor of heat
O
(d)They trap water molecules which
is a good conductor of heat​

Answer 1

Explanation:

(a)They trap a lot of air which is a

poor conductor of heat.

Animals have thick coat of hairs. These hairs help certain animals in keeping their bodies warm such as yak, sheep etc. Hairs of these animals trap a lot of air in them. Air is a poor conductor of heat i.e. it prevents the loss of heat from their bodies to cold surroundings. In this way hair of certain animals help in keeping their bodies warm.