The rational use of energy, also simply called energy efficiency, is to use energy efficiently to achieve a certain result. By definition, energy efficiency consists of the ratio of the amount of energy employed in an activity to that available for its performance. The less energy used in a system, the greater the efficiency of that energy. For this reason, we can say that the lower the percentage of energy required for a machine to do the job, the more energy efficient it is.
The correct answer is Batesian. Animals that advertise their poisonous or dangerous qualities use a defense is called Batesian mimicry. Batesian is basically a mimicry form that a harmless species evolved into some warning for a harmful one directly on the predators.
