Final answer:
Species diversity, genetic diversity within species, and ecosystem diversity are the three types of diversity that contribute to a region's overall biodiversity.
Step-by-step explanation:
Three types of diversity that contribute to a region's overall biodiversity are species diversity, genetic diversity within species, and ecosystem diversity.
Species diversity: This refers to the number of different species that exist in a particular area. For example, a rainforest may have a high species diversity because it contains a wide variety of plant and animal species.
Genetic diversity: This refers to the variation in genes within a population of a particular species. It is important for adaptation and survival. For example, a population of birds may have different genetic variations that help them adapt to different environmental conditions.
Ecosystem diversity: This refers to the variety of different ecosystems within a region. Each ecosystem has its own unique set of species and interactions. For example, a region may have forests, wetlands, and grasslands, each supporting different types of organisms.