Biodiversity & Conservation

Biodiversity is the variety of living things — plants, animals, fungi, and tiny microbes — found in a place. A tropical rainforest has high biodiversity because thousands of species share the same forest. A parking lot has low biodiversity. The more variety an ecosystem has, the stronger and more stable it is, because every species plays a small part in keeping the whole system healthy.

Why Biodiversity Matters

• Food webs need many species — predators, prey, plants, decomposers — to keep working.
• Plants and microbes clean our air, water, and soil for free.
• Wild species are sources of medicines, food crops, and new science.
• Healthy ecosystems handle storms, droughts, and disease better than damaged ones.

Threats to Biodiversity

• Habitat loss — forests cut down, wetlands drained, coral reefs damaged.
• Pollution — plastic in oceans, chemicals in rivers, smog in the air.
• Climate change — warmer temperatures and rising seas shifting habitats faster than species can adapt.
• Overfishing and overhunting — taking species faster than they can reproduce.
• Poaching — illegally killing animals for fur, ivory, or trophies.
• Invasive species — non-native plants or animals that crowd out native species.

Conservation Actions

Conservation means protecting and restoring nature. For every threat, there is a matching action people can take. Reforestation replaces lost forest. Reserves and national parks set aside safe homes for endangered animals such as the Amur leopard, Sumatran orangutan, and vaquita, and for threatened ones such as the polar bear, monarch butterfly, and giant panda, which are still at risk. Recycling and reducing single-use plastic cuts pollution. Renewable energy fights climate change. Quotas and anti-poaching laws protect species from being over-harvested. Even small actions — picking up trash, planting native plants, learning species names — add up.