What do you call the variation of life forms within an ecosystem? 

An ecosystem consists of a diverse array of living things. This is called biodiversity. It is the widespread variation of the many types of living things that are present on earth. The biodiversity indicates the health of the earth as more the biodiversity, the healthier the planet.

Today, there are a number of different kinds of species on the planet. However, there was more biodiversity some years ago. If we don’t take care of the environment, chances are that we will lose the biodiversity that is still present on the planet. The year 2010 was called the international year of biodiversity.