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mickymike92

a. The circulatory system in fish is one-directional while it is two-directional in humans.

b. P has a high concentration of carbon dioxide and low oxygen concentration whereas Q has high oxygen concentration and low carbon dioxide concentration.

What is the circulatory system?

The circulatory system is the system of organism and tissues which help to transport blood and other fluids through the body of a living organism.

The organs of the circulatory system include:

  • The heart
  • The blood vessels - veins, arteries, capillaries

a. In the given diagram sowing the circulatory system of man and the fish, it can be seen that the direction of blood flow in the fish is one way through the heart. However, in humans, the direction of blood flow is two-way through the heart.

b. The gas in P has a high concentration of carbon dioxide and low oxygen concentration. However, the gas flowing through Q has high oxygen concentration and low carbon dioxide concentration.

In conclusion, the circulatory system is important in the exchange of gases in the body.

Learn more about circulatory system at: https://brainly.com/question/3597250

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