An impulse relayed along a myelinated axon jumps from node of Ranvier to node of Ranvier.
Hiya,
The answer is Solar Energy.
Hope this helps!
Explanation: this experiment is long term which means patience is compulsory. you need to have a wild sloth and a domesticated sloth adopted right at their birth (he should be in a controlled environment that mimics the wild). your domesticated sloth shouldn't have the algae. at their middle age, you should compare them with them from every aspect.