Biodiversity is essential for the processes that support all life on Earth, including humans. Without a wide range of animals, plants and microorganisms, we cannot have the healthy ecosystems that we rely on to provide us with the air we breathe and the food we eat. Also the value of the natural world to our general well-being and mental health is well documented. The greatest threats to biodiversity are habitat loss, invasive species, overexploitation, pollution and climate change associated with global warming.