Question

rising levels of carbon dioxide most likely have a greater detrimental effect on the land than the sea. have a greater detrimental effect on the sea than the land. can increase productivity on the land and the sea. can decrease productivity on the land and the sea.

Explanation:

Rising carbon - dioxide levels cause ocean acidification which is detrimental to marine life and ecosystems in the sea. On land, while plants may initially benefit from more CO2 for photosynthesis in some cases, rising CO2 also leads to climate change impacts like extreme weather, droughts, and heatwaves that are overall detrimental to land - based ecosystems and productivity. Overall, the negative impacts are more significant in the sea due to acidification and changes in ocean chemistry.

Answer:

have a greater detrimental effect on the sea than the land.