Because of the way builds up in your body
Sexual, asexual hope this is what u are looking for
Isotopes are variants of a particular chemical element which differ in neutron number (neutral particle)and all isotopes of a given element have the same number of protons (positive particle) in each atom.So isotope B of the sodium will have 11 protons, 11 electrons but it may have a wide range in its number of neutrons.
The temperature of the Beaker B insulated contains a lower amount of identical liquids and the copper rod which won't keep the system going because it can't with stand to keep a breaker going at a low Celsius of 50 degree 30 degree Celsius less than Breaker A
