Which of the following is a quality of the mangrove estuary environment that allows small fish and crustaceans to live there? A It provides shelter and protection from predators for small animals.
B It has a fast-moving current and waves running through it.
C It has a higher salt content than ocean water,
D It has lower than normal oxygen levels.

sulfur dioxide

explanation: acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. these substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.

the correct answer is b