<span>Non-livings things do not exhibit any characteristics of life. They do not grow, respire, need energy, move, reproduce, evolve, or maintain homeostasis. </span><span>Living things are made of cells, obtain and use energy, grow and develop, reproduce, adapt and respond to their environment.</span>
Because it is to help urban people to more modern just like in city areas
I think it refers to worldwide mutual dependence between nations/countries as we depend on each other for the key things like food etc. on a worldwide level.
0 is with the group of 'whole numbers'. Because 0/0 = 0 so still it would be a whole number.
