Question

Butter and oil are examples of food composed of what?

Answer 1

The answer is lipids. Lipids are organic macromolecules that comprise things like fat and waxes. Butter and oil fall into this category, and are thus made of lipids (although butter is a solid made of lipids and oil is a liquid made of lipids). 

Answer 2

Answer;

-Lipids

Butter and oils are examples of food that are composed of lipids.

Explanation;

-Lipids are among the four biomolecules the others being proteins, carbohydrates and nucleic acids. Lipids are made of fatty acids and glycerol. --Fats (solid) and oils (liquid) are the major types of lipids.

-Butter is an example of saturated fats while oils are the lipids in liquid form.