How does the emergence of millions of cicadas at once benefit the environment?

The emergence of millions of cicadas at once, known as a brood, benefits the environment through a process called predator saturation. This phenomenon overwhelms predators with an abundance of food, allowing some cicadas to survive and reproduce. Additionally, the decaying bodies of the cicadas provide a rich source of nutrients for the soil, promoting plant growth. Their activities also aerate the soil, further enhancing ecosystem health.