Biodiversity means the variety of life on Earth, including plants, animals, fungi, and microorganisms. Greater biodiversity makes ecosystems healthier and more resilient to change.
Human activities such as deforestation, pollution, climate change, and habitat destruction are causing many species to decline. Scientists estimate that thousands of species are at risk of extinction.
People can help protect biodiversity by conserving habitats, reducing pollution, planting native species, and supporting conservation programs around the world.