1. Extra enters the atmosphere.

2. CO2 reacts with ocean water and
to form

3. Carbonic acid makes the ocean water more

4. Coral are stressed, leading to

This reduces the number of organisms that
and reduces the
ocean's capacity to be a

rocks and weathering-matching

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds