Question

5.

How would living in an estuary help crabs avoid the problems that carbonic acid creates?
Please help

Answer 1

Answer: An estuary is an area where fresh and salt water meets, such as the mouth of a river. The fresh water will dilute the concentration of carbonic acid and protect the crab shells from being affected by the acid.

Step-by-step explanation:

Answer 2

Carbon dioxide dissolve readily in sea water hence makes it high in carbonic acid concentration. The fresh water will dilute the concentration of carbonic acid thus preventing the crab from being exposed to high concentrations which can dissolve its shell.

Hope this helps !