Cues from inside an animal's body can cause the animal to respond with certain behaviors. These cues are called internal stimuli. Which of the following are behavioral responses to internal stimuli?
1. A deer responds to thirst by searching for water to drink.
II. A cheetah responds to hunger by hunting for a gazelle to eat.
III. A child responds to sleepiness by taking a nap.
IV. A bear responds to seasonal changes by hibernating.
OA
I and II only
OB. I, II, III, and IV
OC. I, II, and Ill only
OD. III and IV only

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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the dna of humans and mice is almost 92% similar. this similarity indicates that . mice have a tail, while humans have a tailbone. the tailbone is a structure in humans.yes it's true.

sorry, is there a picture? i do not see any arrows.

wut? unius0123 wut?

the circled areas are referred to   as sunspots.   the sunspots are cooler than the   surrounding area.

sunspots are temporary phenomena on the photosphere of the sun that appear visibly as dark spots compared to surrounding regions. they correspond to concentrations of magnetic field flux that inhibit convection and result in reduced surface temperature compared to the surrounding photosphere.