1. the main function of the excretory system is to eliminate from the body.
a) waste
b) oxygen
c) disease
d) energy

Option (B) is the correct answer.

Explanation:

Excretory system is defined as a biological system which is responsible for removing excess and unnecessary body fluid materials from the body of an organism in order to prevent any type of damage to the body.

An excretory system helps to maintain proper amounts of water, slat and nutrients into the body.

For example, in a human body kidneys, urinary bladder etc are the excretory systems.

Thus, we can conclude that the main function of the excretory system is to eliminate waste from the body.

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