They gave an example of the interconnection of organs in the body of an animal.

All organs and organ systems are interconnected in the body of animals. For example – the circulatory system is closely connected with the respiratory system. They provide the body with oxygen and perform a general function. Also, the liver is closely connected with the digestive system, as it removes toxins and various poisons from the body. The brain is connected with all organs, as it performs the regulatory function of the body. Some organs are less important in the body and are replaceable, but in general, they all form a single living system.

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