Final answer:
Ansel Adams' photographs helped raise public support for national parks and the environmental movement through their depiction of the natural beauty of these lands.
Step-by-step explanation:
Ansel Adams' photographs played a significant role in raising public support for national parks and the environmental movement. Through his black and white film photography, Adams captured the captivating landscapes of America's national parks and showcased their natural beauty. His photographs served as a visual testament to the importance of preserving these lands and contributed to the conservation efforts of thousands of acres of land.