Identify the organizing principle of the following passage. dolphins, like birds and animals, use vocalization to communicate. they produce creaks, whistles, screams, chuffs, pops, squawks, and chirps. with these sounds, dolphins communicate anger, frustration, affection, and contentment with each other. dolphins use visual signals to convey information. a vigorous bobbing of the head, a wide-open gaping mouth, bubble bursts, bubble clouds, an s-shaped swimming position, and flared-out pectoral fins convey frustration, threat or anger.