I'm almost positive it is tissue because all organ have tissue but most have muscles, blood, veins
Sodium, potassium, chloride and calcium ions are important for establishing the resting potential of the cell. The sodium-potassium gradient is maintained by a pump which transports 2 potassium inside the cell and 3 sodium ions outside the cell.
Either the duodenum or the jejunum
I believe that the answer is D. If something has evolved, it can not interbreed with its old species. I think this is right!
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A substance that has a specific shape and volume changes to a substance that has a specific volume is the statement that best describes this change in question. The correct option among all the options that are given in the question is the third option. I hope the answer helps you.