Explain why bat can travel in the dark without hit any object?

Explain: How is an AP propagated along an unmyelinated axon? That is, how does the signal travel over sometimes long distances without decay?

Any one explain why Batesian mimic is considred to be an exampleof prediation ?

Question 1: Explain why Viruses are not considered living cells Please explain thoroughly and without plagiarism.

Please also provide references that you may use! *important*

Thanks