In terms of chemical content, the fluid on the outside of neurons is similar to -drinking water
-distilled water
-the chlorinated water in a backyard swimming pool
-seawater

It maybe seawater...if I’m correct but it depends on which element that you are talking about

The outside neurons are mainly composed of dissolved salts and or other chemical substances

Labor costs would be a large factor holding production of shade-grown coffee back. if it requires higher labor costs to receive a smaller benefit per hectare, then these costs would be prohibitive on expanding this practice to all coffee growing.

Answer dot(3) is most used;