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  1. Biodiversity | Definition & Facts | Britannica

    Jan 22, 2026 · Biodiversity, the variety of life found in a place on Earth or, often, the total variety of life on Earth. A common measure of this variety, called species richness, is the count of species in an area.

  2. Biodiversity - Wikipedia

    Biodiversity is the variability of life on Earth. It can be measured on various levels, for example, genetic variability, species diversity, ecosystem diversity and phylogenetic diversity. [1] .

  3. What is Biodiversity? Why Is It Important? | AMNH

    The term biodiversity (from “biological diversity”) refers to the variety of life on Earth at all its levels, from genes to ecosystems, and can encompass the evolutionary, ecological, and cultural processes that …

  4. What is biodiversity? - World Wildlife Fund

    Biodiversity is all the different kinds of life you’ll find in one area—the variety of animals, plants, fungi, and even microorganisms like bacteria that make up our natural world.

  5. Biodiversity - National Geographic Society

    May 7, 2025 · Biodiversity refers to all the different kinds of living organisms within a given area, including plants, animals, fungi and other living things. It includes everything from towering redwood …

  6. What is Biodiversity? Definition, Importance, Threats, and Conservation

    Apr 13, 2025 · In this article, we’ll take a deep dive into what biodiversity is, why it matters, how it’s measured, what threatens it, and what we can do to preserve it for generations to come.

  7. Biodiversity: What is it and how can we protect it? - UN News

    Jan 22, 2024 · In simple terms, biodiversity refers to all types of life on Earth. The UN Convention on Biological Diversity (CBD) describes it as “the diversity within species, between species and of...

  8. Biodiversity: What It Is, Its Importance, and Conservation

    Jul 28, 2025 · Biodiversity refers to the variety of life found on Earth at all its levels, encompassing everything from genes to entire ecosystems. It represents the multitude of different plants, animals, …

  9. What Is Biodiversity? - Smithsonian National Museum of Natural History

    Biodiversity — short for biological diversity — is the variety of all living things and their interactions. Biodiversity changes over time as extinction occurs and new species evolve.

  10. What is biodiversity, and why is it so important? / RHS Gardening

    Oct 17, 2025 · Biodiversity encompasses all life on Earth, and the biodiversity we see today is the product of 4.5 billion years of evolution. Biodiversity is often used to mean the number of individuals …