Which of the following processes is directly responsible for growth in living organisms? A. The division of cells into two identical cells
B. The movement of water across a cell membrane
C. The production of reproductive cells called gametes
D. The exchange of the gases oxygen and carbon dioxide

preservation because he preserves part of the land and preserves means save

explanation:

air enters through the nose, moves through the nasal cavity, the pharynx, the larynx, enters the trachea, moves through the bronchi andbronchioles till the alveoli.

i believe it's c. the trait for large beaks will be passed on to future generations through natural selection.

since eventually smaller beaks would have to find another source of food or even eventually just die out from the lack of food.