Answer:
Gap junctions
Explanation:
Gap junctions form pores that connect adjacent cells. In this way signaling molecules, ions and other substances can pass through the pore to the adjacent cell. This type of cell junctions are important in cardiac muscle responses, in brain signaling, during childbirth, etc.
Capillaries are the end structures in the artery system that bring oxygenated blood from your lungs to the rest of your body.
The answer to 3 is B. Moon
Oil <span>is the most common resources extracted from the ocean.</span>