Question

determine whether each statement is true or false. runoff from the chemical weathering of rocks on land helps deliver ions to the oceans. many marine organisms use these ions to build their shells and exoskeletons. much more carbon moves through the slow processes of the carbon cycle each year than through the fast processes of the carbon cycle. if the oceans absorb too much co₂ from the atmosphere, they can become more acidic, potentially causing the shells and exoskeletons of some marine organisms to dissolve. processes that release carbon, like volcanic activity and fossil fuel combustion, occur much faster than processes that store carbon underground, such as limestone formation and coal formation.

Explanation:

1. Chemical weathering of rocks on land releases ions which are carried by runoff to the oceans. Marine organisms use these ions for shell - building, so the first statement is true.
2. The fast processes of the carbon cycle (like respiration and photosynthesis) move more carbon each year than the slow processes (such as rock weathering and fossil fuel formation), so the second statement is false.
3. When oceans absorb excessive CO₂, it leads to ocean acidification which can dissolve the shells and exoskeletons of some marine organisms, so the third statement is true.
4. Processes like volcanic activity and fossil fuel combustion release carbon quickly, while processes like limestone and coal formation store carbon underground over long time - scales, so the fourth statement is true.

Answer:

1. True
2. False
3. True
4. True