Solution:
Numerical models of ocean dynamics indicate that placing dioxide in the deep ocean would isolate most of the carbon dioxide from the atmosphere for several centuries, but over longer periods the ocean and atmosphere would equilibrate. Relative to atmospheric release, direct injection of carbon dioxide into the ocean could reduce the peak amounts and rates of increase of atmospheric carbon dioxide over the next few centuries, but direct injection of carbon dioxide into the ocean would not reduce atmospheric carbon dioxide content by the millennial time scale. On the other hand, Putting carbon dioxide directly into the deep ocean means that the chemical environment of the deep ocean would be altered immediately. Therefore, there may be adverse effects on the marine ecosystem, for example, carbon dioxide dissolved in the sea acidifies the water. For ocean carbon dioxide storage, issues remain regarding environmental consequences, and gaps in our understanding of ocean carbon dioxide storage.
So, we can conclude that the correct answer is:
Therefore, we have that pumping carbon dioxide directly into the deepest zones of the ocean is not permanent and the impacts on marine ecosystems that may later indirectly affect the economies of the planet should be considered.