Sugar maple trees are very sensitive to warm temperatures and do not grow and if right will mark as ! 65pts reproduce well south of pennsylvania. oaks and hickories, on the other hand, can tolerate a much wider range of temperatures and grow all the way from canada south into georgia and florida. if a hillside in a state north of pennsylvania has mostly oaks and hickories growing on it with very few sugar maples, what can you correctly conclude about the climate? a. the global climate is changing rapidly. b. the location must have unusual weather. c. a hardier species of sugar maples has appeared. d. the local climate on the hillside is relatively warm.

Hi there,

The answer to your question is "The local climate on the hillside is relatively warm" or D

I did the exact same test and it was correct.

Hope this helps :)

Sincerely,

Dus4nR

D. The local climate on the hillside is relatively warm

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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