Select all of the statements that only describe the species richness for an area.

To address the question of species richness, it’s essential to first define what species richness means. Species richness refers to the number of different species present in a given area, regardless of the abundance of each species.

Here are the statements that typically only describe species richness:

1. Statement A: "There are 50 different species of plants in this forest."

   • This statement provides a count of the different plant species, which is a direct measure of species richness.

2. Statement B: "This marine ecosystem has 200 unique fish species."

   • Similar to Statement A, this indicates the number of unique fish species present, directly relating to species richness.

3. Statement C: "The coral reef contains 100 species of corals."

   • This statement also describes the variety of coral species, contributing to an understanding of species richness in that particular ecosystem.

Statements that might mention the abundance of species, interactions between species, or ecological roles would not solely describe species richness but rather provide a broader view of biodiversity or ecological complexity. Thus, ensure to select those that simply state the number of different species.