To maintain the correct amount of nutrients, oxygen, and waste products, how does a frogs circulatory system work with its other systems

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Me, ! evaluate ben’s statement. is he correct in equating marriage with a stable relationship? “i think people should be married before they have kids,” says ben. “i think relationship stability is more important,” says leanne. “that is basically the same thing,” says ben. this is all they gave me, there is no multiple choice.