Biodiversity refers to the variety of life forms on Earth, including the different species of plants, animals, and microorganisms, as well as the ecosystems in which they live. Biodiversity is important for the planet's health because it provides a range of ecosystem services that are essential for human well-being. These services include regulating the climate, purifying water and air, pollinating crops, controlling pests and diseases, providing food and medicine, and supporting cultural and recreational activities. Biodiversity also makes ecosystems more resilient to environmental changes and helps maintain balance in the natural world. Overall, biodiversity is crucial for maintaining the health and stability of our planet.