Sort the biotic and abiotic factors into the correct categories. butterfly
Biotic Factors
Abiotic Factors
pond water
sunlight
dead tree
rocks
mushroom

Abiotic: pond water, sunlight, and rocks

Biotic: dead tree, butterfly, and mushroom

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Heres the list

Explanation:

Abiotic Factors are non living things that can have an impact on the ecosystem:

Pond water, Sunlight, Rocks, Dead tree (its no longer living)

Biotic Factors are anything living component that affects another organism or shapes the ecosystem:

Butterfly, Mushroom

relative dating involves things like higher layers are most recent than rocks lower in the sequence. this can be extended to the known sequence of fossils. rocks containing rabbit fossils are later than those containing dinosaur fossils.  

absolute dating methods mainly use radioactive elements that have known rates of decay and produce recognizable products. for example potassium 40 decays to produce argon. once a rock has solidified the argon is trapped. by measuring the argon and potassium0 you can get an accurate number for the age.  

some other methods are good for archaeological ages. dendrochronology involves recognizing the sequence of tree rings. the orientation of magnetized particles in baked clay can be used to date a fire.

hope this .. .

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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