Answer:
box 4, because it has more atoms in the same amount of space
Umm that really is a lot of words there but I will try to find a explanatory answer
During the transfer of energy from one tropic level to the next tropic level around 90% of the total energy is lost in the metabolic processes in the form of heat. Hence only about 10% of the total energy can only be transferred from one tropic level to the next tropic level.