Select all of the following that are true about cephalopods.
A. They are very intelligent and are capable of learning by observation.
B. They have a closed circulatory system
C. They lack a shell.
D. They are exclusively herbivorous.
E. They may be very large and can weigh over 1000 pounds.
Answer: E
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Alveoli in the lungs are connected to the bronchi by a network of tiny tubes called
a. arterioles b. venules c. capillaries d. bornchioles
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