There are three ecological communities, each with differing species, but all of them have 100 individual plants and animals. community a has 21 species. of the 110 individuals, there are 50 individuals of one species and 3 each of the other 20 species. community b has 11 species. of the 110 individuals, there are 90 individuals of one species and 2 each of the other 10 species. community c has 11 species. of the 110 individuals, there are 10 individuals of each species. in the scenario above, which community has the greatest biodiversity?