Answer:
bone cell, bone tissue, femur (thigh bone), skeleton, dog
Explanation:
The dog itself is logically the largest. That narrows it down to the first two. The smallest organization is cells, because tissues are made of cells. That leaves only the first option.
Two siblings are like twins but brother and sister or brother
Answer:
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The concept of cell signaling is helpful to other fields as they listen to what is signaling them and form a unified action plan.
B positive patients can receive blood from B positive, B negative, O positive and O negative donors.