Answer:
Gap junctions within the intercalated disks
Explanation: Gap junctions within the intercalated disks allow impulses to be propagated from one cardiac muscle cell to another. It allows sodium, potassium, and calcium ions to flow between adjacent cells, propagating the action potential, and ensuring coordinated contractions.
Answer:
3.Fitness is related to whether an organism's adaptations result in more offspring
Sports drinks are the best choice.
Answer:
25. red
24. A. Temperature and Luminoscity
Explanation:
