Biodiversity:Biodiversity refers to the variety of living organisms within an ecosystem or biome. It includes genetic diversity, species diversity, and ecosystem diversity.
Ecotone: An ecotone is a transitional area where two different ecosystems or biomes meet. It often exhibits a mix of characteristics from both adjacent ecosystems and supports unique species adapted to the conditions found there.
Keystone Species: A keystone species is a plant or animal that plays a crucial role in maintaining the structure and function of an ecosystem. Their presence has a disproportionate effect on the overall biodiversity and stability of their habitat.