Question

3
Sun stroke occurs due to
(A) loss of heat
accumulation of heat
(C) loss of salts
(D) accumulation of salts

4 . The baby should be given only breast milk for the
(A) first one year
(B) first six months
(C) first ten months
(D) first two years
.​

Answer 1

Answer:

2.a 4.b ok fine nice of u

Answer 2

Answer:

3 . Sun stroke occurs due to

(B) accumulation of heat

4 . The baby should be given only breast milk for the

(B) first six months

Explanation:

We all know that the sun is very important for life. But there are times when excessive heat from the sun can be harmful for us. Our body loses extra heat by sweating but if this extra heat is not lost it results in over-heating of the body.

Over-heating can be of two types:

1. Heat exhaustion
2. Sun-stroke

1. HEAT EXHAUSTION

If we keep on working in hot weather we sweat a lot and lose a lot of water and salt from the body. This results in heat exhaustion.

How will you know that a person has heat exhaustion? The person:

• Becomes tired
• Feels faint
• Has a headache
• Has a rapid pulse

CAUSE: loss of salts from body

2. Sun-stroke

Sun-stroke occurs when a person keeps on working in hot weather which is windless and humid. Do you prespire in humid weather? Yes, but in humid weather, extra water in the form of perspiration does not evaporate from our body. This causes in extra heat to accumulate in our body resulting in a sun-stroke.

The victim of sun stroke has the following symptoms:

• tiredness
• strong headache
• red and hot skin
• fast pulse
• collapses and becomes unconscious.

CAUSE: heat accumulation in the body.