A student is using notes to write about a biologist's notes on artificial reefs: 1) Artificial reefs are human-made structures placed underwater. 2) Small fish may shelter around the structures. 3) Algae and invertebrates can attach to reef surfaces. 4) Poorly placed reefs can damage existing habitats. 5) Biologists evaluate sites before installing artificial reefs. The student wants to present a balanced claim about artificial reefs. Which choice best combines the relevant notes?