A Cat Strolls Across Your Backyard

question 46

Multiple Choice

A cat strolls across your backyard.An hour later,a dog with its nose to the ground follows the trail of the cat.Explain what is going on from a molecular point of view.

• A)The dog is following the areas of increased density of the Earth.
• B)The dog is smelling atoms from the cat.
• C)The dog is smelling molecules from the cat.
• D)The cat is leading the dog into a trap.