Answer:
The frogs circulatory and digestive systems are physically connected because the frog’s digestive system includes its liver and this has a hepatic portal system through which veins pass and come out and that is the circulatory system so they are connected.
Since the frog's process of digestion contains its liver, which also has a hepatic portal structure system throughout which veins travel and emerge out, because this is the circulatory system.
The circulatory and digestion processes are physically related.
The pulmonary circuit transports blood to the lungs, where it is oxygenated.
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