The amount of available energy changes between the trophic levels found in a food chain or energy pyramid. A food chain. Arrows point from one stage to the next. The stages are leaves, mouse, snake, hawk.

Photos (left to right) by Mehmet Karatay, Jens Buurgaard Nielsen, Furryscaly, and Walter Siegmund

How would the amount of available energy differ in the trophic level of the mouse compared to the trophic level of the hawk?

a.
Available energy would increase from the mouse to the hawk.
b.
Available energy would decrease from the mouse to the hawk.
c.
Available energy would initially increase from the mouse to the hawk, and then decrease over time.
d.
Available energy would remain the same from the mouse to the hawk.

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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you didn't give any options but heres what i can tell you: an inference is likely to change based on additional observations. the latter is something that you have seen or sensed using your sensory organs while the former is like a conclusion out from what you have observed.