For each food listed below, choose whether it has all single carbon-to-carbon bonds or at least one double carbon-to-carbon bond.

peanut butter
all single carbon-to-carbon bonds
at least one double carbon-to-carbon oil
all single carbon-to-carbon bonds
at least one double carbon-to-carbon cheese
all single carbon-to-carbon bonds
at least one double carbon-to-carbon

Peanut butter - At least one double carbon-to-carbon bond

The molecule that would represent roasted peanut used in peanut butter would be C57H104O6 which is triolein. It has three double carbon-carbon bond.

Sunflower oil  -At least one double carbon-to-carbon bond

The molecule that would represent sunflower oil would not only be one fatty acid but a combination of fatty acids wherein they all have double carbon-carbon bonds.

Cheddar cheese - At least one double carbon-to-carbon bond

Cheddar cheese is a mixture of different saturated fatty acids, monounsaturated fatty acids and polyunsaturated fatty acids. The unsaturated fatty acids would have at least one double bond in the carbon chain.

The answer is ozone layer.