Answer:
The fact that most eukaryotes reproduce sexually is evidence of its evolutionary success. In many animals, it is actually the only mode of reproduction. The genetic diversity of sexually-produced offspring is thought to give species a better chance of surviving in an unpredictable or changing environment.
Answer:
Impulses travel from one neuron to the next by an electrical impulses that travels down the axon of one neuron to another. So I believe its 1.
Explanation:
Have a good day! (^w^)
The structure is D. a substrate