Roughages(fibers) are the food groups which are not digested.
<h3>What is Roughage?</h3>
This is referred to as indigestible forms of carbohydrate which aids digestion in the body.
They are also involved in efficient bowel movement and examples include vegetables etc.
Read more about Roughage here brainly.com/question/2284450
#SPJ12
Answer:
The brain and the spinal cord
Explanation:
Water is used for many things it helps plants grown and keeps animals alive as well as humans without water we would all die. You can say water is a necessity to survive if not all crops would die as well as trees and everything.