<span>Answer: 1/4 AA or type A Blood; 1/4 BB or type B Blood; 1/2 AB</span>
Isotopes are different versions of an element or different versions of a certain kind of atom. In order for an atom to be an isotope, it must have the same number of protons because the protons determine what kind of element it is. Also, there must be a different number of neutrons in the core the atom.
Evolution is the change in heritable characteristics within a species ! :)
Primary function of the carbon cycle is to "recycle carbon throughout the biosphere, which includes the atmosphere" Hope this is what you needed!