Answer:
saturated fatty acids
Explanation:
Butter is a fat that is solid at room temperature because it is a saturated fatty acid and contains 70 percent of It. Butter comes from a cow, which is an animal source.
Fats that are liquid at room temperature are unsaturated fatty acids. The molecular structure of saturated fatty acid and unsaturated fatty acid are different as saturated fatty acids lack double bonds while unsaturated fatty acids consist of at least one double bond. saturated fatty acids are linear and unbranched while unsaturated fatty acids are branched.
Hence, butter contains saturated fatty acids.