Chapter 8: Excretion in Humans

Question 1

Define excretion.

Answer 1

Excretion is the process of removing metabolic products, toxic substances and excess substances from the body.

Question 2

Why is excretion necessary?

Answer 2

It is important to prevent the buildup of harmful substances in the body
* Metabolic activities occur all the time in the body while carrying out life processes
* These metabolic activities produce harmful or toxic substances that are not needed by the body