Question

it is necessary to remove harmful and waste substances from the body

Answer 1

it is necessary to remove waste from our body as accumulation of waste in our body for a long time can lead to various disease and even lead to death as waste of our body contains harmful and toxic substance therefore removal of waste is necessary .

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Answer 2

(i) Many harmful and waste substances like urea, uric acid, ammonia, etc. are produced in living organisms.

(ii) If these substances accumulate in the body or

are retained in the body for long, it can lead to

serious harm or even death.

(iii) Hence, it is necessary to remove such harmful and waste substances from the body.