List three characteristics of living organisms
D it allows all substances to enter & exit the cell.
Largest- Oak trees Smallest- Toads
You see, passive transport needs no energy. So that being said, it moves from areas with high concentration to areas with low concentration.
Hope that helps!
Answer:
The circulatory system transports blood throughout the body through the veins. The circulatory system works with the respiratory system because it transports oxygen through the body as well. It works with the digestive system because it transports waste so it can be disposed.
Explanation:
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