Question

During the past 200 years, absorbed somewhere between one-third and one-half of the carbon dioxide released into the atmosphere by fossil fuel burning. Carbon dioxide dissolves in seawater and combines with to form carbonic acid. Increasing amounts of carbonic acid in the seawater lower the pH by increasing the concentration of hydrogen ions. As the water becomes more , the hard, calcium-containing shells formed by many organisms—such as shellfish and corals—erode away. If ocean acidification continues, shellfish species that provide food for many other animals (including humans) may go extinct, and entire coral reefs, including the Great Barrier Reef in Australia, may disappear.

Answer 1

Answer:

The correct answer would be -

1. the ocean have

2. water

3. acidic.

Explanation:

Carbon dioxide fro the atmosphere dissolves in the seawater naturally. This process can be understood by the following process:

Water and carbon dioxide reacts to form carbonic acid that can dissociate into either carbonate ion or bicarbonate ion:

1. CO2 + H2O ====> H2CO3⁻ (carbonic acid)

2. H2CO3⁻ ======> H⁺ + HCO3⁻ (bicarbonate ion)

3. H2CO3⁻ ======> 2H⁺ + CO3⁻ (carbonate ion)

Due to the presence of proton ions in seawater, seawater becomes more acidic. As hydrogen ions bind to the carbonate ions to make bicarbonate ions, the carbonate ion reduced which is required to form the