Where does an action potential occur? Explain the process of what occurs inside the axon (the membrane) as the action potential is traveling down the axon.

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.

colors do exist. the color of the sky is actually violet; humans percieve the color of the sky as blue.