The ratio is 9:52. Meaning there is 9 crabs in the tide pool compared to all other invertebrates in the tide pool (including crabs). Crabs are also probably higher on the food chain because there is less of them, meaning they require more food then the other invertebrates.
Hope this helps!
Answer:
Step-by-Step-explaination
9(−5ℎ) = - 45h
A = 1/2 bh
A = 1/2 (21)(8)
A = 1/2 (168)
A = 84
