Answer:
- 2.90
Explanation:
finches, woodpecker finches, and mangrove finches increase. Support your answer.
A.
different cells for different functions
B.
develop into specialized cells after they are formed
C.
all cells are smaller than those of single-celled organisms
D.
all cells are the same size and shape
b. alveoli
c. trachea
d. epiglottis
Gas exchange in the respiratory system occurs in the alveoli.
Gas exchange in the respiratory system primarily takes place in tiny, balloon-like structures called alveoli. These are found in the lungs and are surrounded by an extensive network of blood vessels. During inhalation, oxygen-rich air enters the alveoli, diffusing through their thin walls into adjacent capillaries.
Simultaneously, carbon dioxide, a waste product of cellular respiration, diffuses from the bloodstream into the alveoli to be exhaled during exhalation. This exchange of oxygen for carbon dioxide is vital for cellular function and provides the body with the oxygen needed for energy production, while also removing waste carbon dioxide to maintain proper pH levels in the blood.
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