Suppose a nerve impulse must travel 0.90 m from your toe to your central nervous system. If the impulse travels at 150 m/s, calculate how long it will take the impulse to arrive. If the impulse travels at 0.2 m/s, how long will it take the impulse to arrive?

Use the phylogenetic tree to the right to determine which statement below is true. organisms a and f are not related. organism e is more closely related to organism b than organism f. organisms c and d are more closely related than organisms a and b. phylogenetic trees