decreasing the level of carbon dioxide in the atmosphere decreasing the amount of oxygen being produced increasing the amount of marine sediments increasing salt-water fish populations
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: One effect of ocean pollution is that it can reduce populations of phytoplankton and algae. The reduction of these populations might have which impact on an ecosystem?
Possibilities:
- decreasing the level of carbon dioxide in the atmosphere
- decreasing the amount of oxygen being produced
- increasing the amount of marine sediments
- increasing salt-water fish populations

decreasing the amount of oxygen being produced