It should be 3 or 6... Not 100% sure.
This is false the population density will decrease as the area decreases
Answer:
The movement of molecules across a membrane without the input of energy is known as passive transport. When energy (ATP) is needed, the movement is known as active transport. Active transport moves molecules against their concentration gradient, from an area of low concentration to an area of high concentration.
Explanation:
hope this helps :D
I think true don't count me 100 percent
