It says Compare the components that make up the windsurfer, his board, and his surroundings and then its a picture of him but I don't get what I'm supposed to be comparing.

Atoms

Explanation:

The windsurfer, wind and water all the things in the surroundings are made up of matter. Matter is made up of atoms. Atoms are the smallest unit that cannot be simplified further. All solid liquids and gases are made up of atoms.  

An atom is made up of three sub particles that are known as protons electrons and neutrons. An atom typically weighs around 100 pm  (picometers)