Answer:
e. whether or not the impulse begins in the CNS
Explanation:
Nerve impulse is action potential movement through the axon. Nerve impulse propagation has its velocity (speed at which nerve impulse travels down the axon) which depends on many factors. For example, myelination increases the conduction velocity. Also, the larger the diameter of an axon, the higher the velocity is. Nodes of Ranvier present on the axons, and myelin sheath between the nodes act as a good electrical insulator which also increases the velocity.
With sufficient stimulation, mature sperm<span> travel </span>from<span> the epididymis </span>through<span> the vas deferens, a muscular tube, which propels </span>sperm<span> forward </span>through<span> smooth muscle contractions. I hope this helps :D</span>
The similarities in the structure of the three species is due to their sharing a common ancestor while the differences is due to adaptation.
<h3>What is divergent evolution?</h3>
Divergent evolution is evolution where individuals who shared a common ancient ancestor process to have differing structures due to differences in their habitats.
All three species that Flor observed having similar structures is because they had a common ancestor.
The species had differences because they evolved to adapt to their different environments.
Wall geckos and Pacific gulls have temporal holes in their skulls as adaptations to their habitat.
Learn more about adaptations at: brainly.com/question/29594
