I WILL BRAINLIST The photograph below shows a collection of preserved beetles.

These beetles do not appear to be organized using a taxonomic system. A taxonomic ordering would be important in allowing the scientists to determine
A
whether the collection contains mutated beetle shells.
B
whether the collection contains new species of beetles.
C
whether the collection contains beetles with metallic shells.
D
whether the collection contains damaged specimens of beetles.

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 correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.

zxndjdjxjjxik no f cnnxn k is s dksoozkdkxjxjxjxj

answer/// the nucleoid region contains dna; ///