Explanation: I think the way to do it is to just divide the biomass of the primary carnivores by the herbivores since they are the trophic levels right next to each other. Therefore, the efficiency of energy transfer is (2360/25900)*100%=9.112%. Hope that helped!
The answer is; endoskeleton
An endoskeleton allows for smooth and steady growth unlike in an invertebrate with an exoskeleton that needs to shed their skeleton during irregular growth spurts. An endoskeleton is significant for leveraging (like an anchor) skeletal muscles hence enabling the animals to grow big and is able to support their own weight.
Because water is air so all it needs is sunlight's help to finish it off.
