Answer:
Walls are thin.
Inner surface is moist.
Tissues are filled with blood vessels.
Exposed to air
Explanation:
Answer:
Cellular homeostasis involves maintaining a balance of several factors that make a cell healthy. The cell membrane is a lipid bilayer that prevents that passage of water and ions. This allows cells to maintain a higher concentration of sodium ions out the outside of the cell.
Explanation:
The answer is No. <span>When sodium ions enter the cell, water does not exit to maintain fluid balance. I</span>f extra sodium ions entered the cell, then extra water must be given to keep the same density. Water does not exit, it must be added.
The answer is D: A gradual change in a species over time.
