I believe your pointing to number 16, I believe the answer is B
Answer is B. The number of the question that should be considered next. Let's say your organism has a dorsal fin, then you would go to 5. Then you choose a or b depending on the location of the tail. Let's choose 5a for now. Across from it says 6, so you go to 6
The two ions are SODIUM AND CALCIUM IONS. Polarization refers to loss of polarization, that is, loss of the difference in charge between the inside and the outside of the plasma membrane of a muscle due to a change in permeability and migration of ion. When a heart muscle is depolarize, sodium ion and calcium ion channels open and they migrate into the cell from the outside.
If this oil<span> mixes with dead </span>skin<span> cells and blocks a pore, it </span>can<span> produce a pimple.</span>Sebaceous glands<span> produce </span>oil<span> called sebum that moves up hair follicles to the surface of the </span>skin<span>, where the </span>oil<span> lubricates </span>skin<span> and hair. The </span>gland<span> may keep producing </span>oil<span> when the opening is blocked, leading to a pimple.</span>
Answer: Apes, such as chimpanzees, are the primates most closely related to humans.