Answer:
Abiotic: Water, rocks, air, and sand
Biotic: Bacteria, fish, coral, and shells
Answer:
This is a poorly formatted question. B.
Explanation:
First of all, B is absolutely correct, but may not be within this context. I would answer B, but be ready to fight your teacher about it.
Answer: Crab, because an arthropod has no spine but an external skeleton.
