Final answer:
Humans depend on ocean systems for essential ecosystem services, such as the oxygen production by phytoplankton through photosynthesis. However, an increase in marine biodiversity due to engineering for food production is not reflective of current human dependency but a potential future outcome with its own risks.
Step-by-step explanation:
The question addresses how humans depend on ocean systems, specifically inquiring about an example that does not represent this dependency. While humans rely on the ocean for a variety of ecosystem services, one incorrect example might be the suggestion that biodiversity of marine ecosystems will increase as humans use engineering to increase food production in the oceans. This statement is not so much a reflection of current human dependence on the oceans but rather a future aspiration that could potentially harm marine biodiversity.
There are numerous ways humans are dependent on ocean systems. For example, one extremely important service is provided by phytoplankton in the oceans. Phytoplankton, through the process of photosynthesis, release over 50% of the oxygen produced on Earth, which is essential for human breathing. Conversely, human activities such as overfishing, pollution, and habitat destruction have led to a decline in marine biodiversity and the health of ocean ecosystems, indicating a reciprocal impact where human actions shape the health of ocean systems.