Answer:
Some variation is the result of differences in the surroundings, or what an individual does. This is called environmental variation.
<span>The complete question includes these choices: a. vitamin B6
b. calcium
c. water
d. protein The correct answer is c. water. Water has a peculiar chemical structure, with special and unique properties that are crucial for chemical reactions (eg good dissolving properties, resistance to pressure and fluidity throughout changes of state).</span>
Endocytosis, it's active transport, basically the cell transports molecules. Hope this helps!