it is built on years and years of scientists figuring things out, countless expirments, inventions. etc.
hope this helps.
Answer: b. Species richness, species abundance, and species evenness.
Explanation:
The species diversity index can be define as the measure of diversity of species. This takes into account for the number of species present in an area, also the relative abundance of species in an area. If the species richness increases, evenness of the species also increases and the diversity of species also increases.
The answer would be the *thermosphere