Question

This graph represents four ecosystems. Each ecosystem has a different number of species, adding to its biodiversity. Different colors represent different species. Which statements correctly summarize the data depicted by the graph?
1. Ecosystem D has more biodiversity than ecosystem C.
2. Ecosystem B has more biodiversity than all the other ecosystems.
3. Ecosystem A has more biodiversity than ecosystem B but less biodiversity than ecosystem C.
4. Ecosystem B has more biodiversity than ecosystems C and D but less biodiversity than ecosystem A.
5. Ecosystem A has more biodiversity than ecosystem C but less biodiversity than ecosystem B.

Answer 1

The correct statements are:

2. Ecosystem B has more biodiversity than all the other ecosystems;

The ecosystem B, as shown by the graph, is by far the one that has the most biodiversity, with 9 species living in this ecosystem. On the other hand, the ecosystem A has 5, while the ecosystem C only 3, and ecosystem D just 2 species.

5. Ecosystem A has more biodiversity than ecosystem C but less biodiversity than ecosystem B;

The ecosystem A has 5 species in its boundaries, and that makes it more diverse than the ecosystem C that only has 3 species in its boundaries. But ecosystem A is also almost twice less diverse than the most diverse ecosystem B which has 9 species in its boundaries.