Scientists think there are nearly 9 million unique species of life on the planet (not counting the near-infinite variations of bacteria), each of which has adapted to fit a specific role in its environment. This variety is called biodiversity. 

In smaller environments such as rainforests, rivers, and even farms, biodiversity is the genetic variability that gives every ecosystem its adaptability and resilience. However, farms are ecosystems, too. With increasing worry over how animal agriculture affects the environment, people are also wondering if cattle pose a threat to biodiversity.