Final answer:
Monounsaturated fatty acids contain one less hydrogen atom than saturated fatty acids. They are liquids at room temperature. Good food sources include olive and peanut oils and avocados.
Step-by-step explanation:
Monounsaturated fatty acids contain one less hydrogen atom than the same-length saturated fatty acid chain. They are liquids at room temperature but solidify at refrigerator temperatures. Good food sources include olive and peanut oils and avocados.