How is oxygen carried from the lungs to the tissues? A. It leaves the alveoli and enters mucus.

B. It leaves the bronchi and enters capillaries.

C. It binds to a protein called hemoglobin in red blood cells.

D. It is carried by cilia through the bronchioles.

An example of internal feedback working to maintain homeostasis is your a. decreased respiration rate when you are studying b. decreased heart rate when you are sad c. increased respiration rate when your muscles need more oxygen d. increased heart rate when your lungs need more oxygen

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

Explain why ecosystem diversity results in species diversity in a healthy biosphere