U. S. Fish and Wildlife Services collaborates with . a.
private landowners
b.
state agencies
c.
industries
d.
all of the above

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