NO LINKS PLEASE If Charles Darwin could return to the Galapagos Island today, which of the following is an example of a change he might see?

O A. no changes
O B. more islands
O C. more tortoises
OD. new species of iguanas

D. New species of iguanas

Explanation:

A- doesn't make sense because nature changes every day.

B- More islands is possible but not likely considering your other options.

C- More tortoises is also possible but because I haven't read your text book or where your learned this information I can't be sure this is it.

D- Is the likeliest

answer; /// i believe the correct answer is (reactants);

the answer that best describes the relative refractory period in the neuron is the resting membrane potential is restored, but concentrations of sodium and potassium are not restored to their original state.

the refractory period is the time during which another stimulus given to the neuron will not lead to a second potential. thus, because na+ channels are inactivated during this time, additional depolarizing stimuli do not lead to new action potentials.  

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