It's 100% not B.... but other than that the organism must be provided. protozoans use flagellum (whip-like structure), amoeba use pseudopods (false feet), and cilia (hair-like structure) are used for eukaryotic cells.
Answer:
gravity,friction and motion
<span>Both of them are example of Passive transport and Passive processes; If that's the type of answer you are looking for.</span>
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The correct answer is letter A: the circulatory system removes waste from the tissues by converting carbon dioxide-rich blood into oxygen-rich blood that can be circulated throughout the body to support its several functions. Without the lungs the human body will not be able to process converting blood cells into oxygen-rich cells in the body.
