Glycogen is a molecule that contains many glucose molecules. What best describes glycogen?

A substance deposited in bodily tissues as a store of carbohydrates. it is a polysaccharide which forms glucose on hydrolysis

Your dog can sniff at or even eat a bit of catnip. the herb is edible and not harmful. just don't expect them to roll around like a cat would! your dog may scrutinize catnip by licking and smelling at it, or be totally indifferent to this stimulant.

"air pollution" is the correct answer i believe