Biology
How does our skin provide protection to our body against the following?
a) Entry of germs
b) Excessive loss of heat in severe cold
c) Entry of harmful ultra-violet rays.
Skin
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Answer
It provides protection in the following ways:
(a) Entry of germs — The skin checks the entry of toxic substances or the agents causing infection into the body.
(b) Excessive loss of heat in severe cold — The skin prevents loss of heat in cold weather and facilitates loss of heat in hot weather.
(c) Entry of harmful ultra-violet rays — It protects the body against excess ultra violet light which is potentially very harmful.
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