A food web is a system of interlocking and interdependent food chains.
A food chain is a hierarchical series of organisms each dependent on the next as a source of food.
Basically, the difference of the two is that a food web contains multiple different species in the same level that eat the animal below it's status. A food chain is one after the other.
Can u explain it more plz.
The atomic number of an element gives the proton and electron in the atom while the mass number gives the total number of protons and neutron