Question

select the correct answer. historically, the earths ocean had a ph of 8.2. in recent years, it has dropped to 8.1. how might this change affect the ocean environment? a. the skeletons of coral will become soft due to increased acidity. b. the rise in alkalinity will make the ocean unfit for certain ocean plants. c. at 8.1, the ocean has reached neutral ph, making it identical to pure water. d. the oceans co₂ content will decrease, improving the environment for animals.

Explanation:

A lower pH indicates increased acidity. Coral skeletons are made of calcium carbonate which can dissolve in more acidic conditions. Option B is incorrect as a drop in pH means a decrease in alkalinity. Option C is wrong because neutral pH is 7, not 8.1. Option D is incorrect as increased acidity is often associated with increased CO₂ absorption by the ocean, not a decrease.

Answer:

A. The skeletons of coral will become soft due to increased acidity