The cell membrane is a structure that separates the cell from its environment. Identify an object or molecule that cannot pass through the cell membrane.
Explain why preventing the free passage of this object or molecule helps the cell.

changes in factors like average income and preferences can cause an entire demand curve to shift right or left. this causes a higher or lower quantity to be demanded at a given price. demand curves relate the prices and quantities demanded assuming no other factors change. it is important for consumers to know this information, because it is crucial for them to know what they can afford and can't afford. i hope this .

answer; limbic system;