The amount of plants available does affect there growth if there is not enough water the plant would get yellow with small leaves
Yes the amount of water given to plants affect their growth because if they do not get enough water they wilt and if they have to much water they might die or it will take them to long to grow. If you put the right amount of water then nothing will happen to the plants.
No soda is the best amount
Yes the plant will not grow duh