an atom is chemically stable when its outer layer is completely filled with energy. im pretty sure this is right
It is true because <span>A pyramid of biomass is a representation of the amount of energy contained in biomass, at different trophic levels for a given point in time . The amount of energy available to one trophic level is limited by the amount stored by the level below. Because energy is lost in the transfer from one level to the next, there is successively less total energy as you move up trophic levels. Tree is a base as it provides food and energy.</span>
I believe that it is the first one just a guess tho. So don't trust me, just in case
