How are matter made up of?

Objects that take up space and have mass are called matter. Everything around you is made up of matter. Chocolate cake is made up of matter. You are made of matter. If you are having trouble understanding matter, look all around you. You can see matter makes up the walls of your house and your classroom. Matter is large and matter is small.

Hope u understood

all matter are made up of atom which are in turn of protons, neutrons and electrons .  both atoms and molecules are held togeather by a form of potential energy called chemical energy..

what effect does exercise have on the nervous system?

the answer is c.