Why is Biodiversity considered Earth's own “ Safety net”?

Explanation:

Biodiversity allows for everything to exist. All types of animals, plants, etc. work and contribute in different ways, the actions that every species makes contribute to the larger ecosystem which allows for plants to grow, food to exist, other species to thrive, the atmosphere to exist, etc. All of these side effects create a system that allows Earth to maintain a habitable state and prevents it from becoming a dry and bare planet that cannot sustain life.