AP BIOLOGY

Detailed explanation-1: -Biodiversity refers to every living thing, including plants, bacteria, animals, and humans. Scientists have estimated that there are around 8.7 million species of plants and animals in existence. However, only around 1.2 million species have been identified and described so far, most of which are insects.

Detailed explanation-2: -biodiversity, also called biological diversity, 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.

Detailed explanation-3: -Species Diversity is simply the number and relative abundance of species found in a given biological organisation (population, ecosystem, Earth). Species are the basic units of biological classification and hence, this is the measure most commonly associated with the term ‘biodiversity’.

Detailed explanation-4: -Species richness can be defined as the number of species per unit area. There is a wide variation in the distribution of species on this planet.

Detailed explanation-5: -Species diversity is all the differences within and between populations of species, as well as between different species. Ecosystem diversity is all the different habitats, biological communities, and ecological processes, as well as variation within individual ecosystems.