Each time one organism eats another organism, a transfer of energy occurs.in the form of sugars which an organism breaks down for energy.
The main difference between the organisms are the uses of the appendage and the size and number of certain bones. The human arm is used for a variety of functions while the lizard's and the cat's are used for walking an climbing, the whale's for swimming, the frog's for support and the bird's and the bat's for flying.
Well 1m = 100cm
so 6m = 600cm. 600cm > 63cm. Hence, 6m is greater.