What is the main function of these organs? A. To take in oxygen and remove carbon dioxide
B. To eat and break down food
C. To transport materials to and from body cells
D. To see and help the body respond to the environment
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Would really appreciate it, i have an idea but not completely sure

Many animals cannot sweat to maintain a stable body temperature. what is one other way animals can cool down?

Which of the following describes a boom period? a. as one population increases, another population decreases. b. as one population increases, the other population also increases. c. as one population decreases, another population increases. d. as one population decreases, another population also decreases