Biodiversity represents the degree of the variety of plants and animals. The various species on our earth keep nature balanced. Many different plants, trees and shrubs in the city will stimulate biodiversity. The more variation in vegetation, the more variation in the animal life it will attract.
A wide range of pollinating insects and many different plants will be a food source for birds and other animals. Pollinating insects are an important link in ecosystems. In other words, they are essential for biodiversity.