Are my answers correct?

In the context of the neural impulse, which of the following is true about the depolarization of neuron membranes?

Someone me with this: a mineral' is determined by its actomic structure.

The wings of insects, birds, and bats evolved independently but carry out similar functions. this is an example of a. analogous structures. b. embryonic structures. c. vestigial structures. d. homologous structures.