Why are there so many capillaries in the lungs and small intestine?

To prevent our body's from getting sick and to keep our objects that don't belong there

The proton has a positive charge while the neutron has no charge they both make up the nucleus of the atom while the elections have a negative charge and surround the nucleus of the atom. the protons and electrons are used to calculate the atom's mass whereas the neutrons don't affect the mass

They formed the oceans.  as they melted water was formed and the water made the oceans