1.) Removing an organism from an ecosystem can fail the system by taking away control. If it’s prey, there will be no food for the predator and the predator will die off. if it’s removing a predator, the prey will over populate destroying the ecosystem.
2.) Biodiversity is the diversity within an ecosystem. Basically different plants and animals existing under one region.
3.) It’s important because it’s needed for prey to feed off different plants and predators different animals to fulfill their needs. Biodiversity is basically an ecosystem filter