A true statement about the circulatory system is A. The pulmonary arteries carry oxygen-rich blood from the heart to the lungs B. The pulmonary veins carry oxygen-rich blood from the lungs to fed heart C. The pulmonary arteries carry oxygen rich blood from the lungs to the heart D. The pulmonary veins carry oxygen poor blood from the heart to the lungs

8) animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. d) a dog is getting hot in the sunlight, so he moves to a shaded area.