Bile, a substance produced in the is important in the breakdown and absorbtion of

The answers are LIVER and LIPIDS.

Bile is produced in liver. They're stored in Gall bladder and is released when needed. Their main function is to emulsify lipids into smaller oil droplets. This is a physical digestion. This process can increase the surface area of the lipids so that it can be chemically digested by enzyme lipase later easier. The larger the surface area gets, the more enzyme can digest them at the same time.

It's speed of rotation.