Which example describes animals living in a social hierarchy? Check all that apply.

A. an anteater's light sleeping pattern to protect itself

B. a worker bee defends the hive while the queen bee lays eggs

C. a mole that makes and elaborate tunnel system

D. a prairie dog barks to alert family members when it spots a predator

E. a red panda searching at night for food
(Multiple question answer)

B.a worker bee defends the hive while the queen bee lays eggs

D.a prairie dog barks to alert family members when it spots a predator

Explanation:

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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 menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.