What is excretion? How do animals and humans remove waste products of their body?

Dear Student.
Please find below the solution to the asked query.

Toxic wastes, which are produced in the body during the functioning of cells, are harmful to the body. Thus, they are removed from the body by the process of excretion. 

Humans and most of the animals remove body wastes by the following means:
  • Solid waste left after digestion is removed  by defecation through anus.
  • Wastes including urea generated in different biological processes are removed through urination.
  • Sweating also helps body get rid of extra salts and toxins.
  • Carbon dioxide a waste product of cellular respiration is removed through exhalation.

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excretion means removal of waste from the body.
animals and humans remove the waste in the following ways-
solid
liquid-urine 
gas-sweat
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jp
g
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