Biodiversity or Biological diversity is all the different varieties of life on Earth- the variety of animals, plants, fungi, different microorganism that make up our natural world. It comprises the number of species, their genetic variation and the interaction of these life forms within complex ecosystems. In a UN report published in 2019, scientists warned that one million species - out of an estimated total of eight million - are threatened with extinction, many within decades. Earlier known mass extinctions wiped out between 60% and 95% of all species. It takes millions of years for ecosystems to recover from such an event.