What is the significance of the Sierra Nevada mountains to California's environment?

The Sierra Nevada mountains play a crucial role in California's environment by providing important water resources and supporting a rich biodiversity. This mountain range acts as a vital watershed for the state, capturing significant amounts of precipitation in the form of snow during winter. As the snow melts in the spring and summer, it feeds into rivers and reservoirs, which supply water for drinking, agriculture, and industry throughout California.

Moreover, the diverse ecosystems within the Sierra Nevada, ranging from alpine meadows to dense forests, host an array of plant and animal species. This biodiversity is essential for ecological balance, offering habitats for wildlife and contributing to the overall health of the environment. The natural processes occurring within these ecosystems also support recreational activities and tourism, which are significant components of California's economy.

While the other options highlight aspects related to the Sierra Nevada, they do not capture the complete significance of the mountains in terms of water resources and biodiversity, which are critical to both the state's environment and its people.