Think it's C since joints connects two bones together and marrow is inside bones.
I. Facilitated diffusion is your answer.
Active transport <span>is the movement of molecules across a cell membrane into a region of higher concentration, this process requires energy. Both osmosis and diffusion are passive transportations which means that they don't require energy.
Hope this helps!
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The blood has low oxygen content
Answer:
Carbohydrates, such as sugar and starch, for example, are readily broken down into glucose, the body's principal energy source.
