As per a recent study human induced industrial and agricultural processes have significantly impacte...........

Environment and Ecology Concept of Ecosystems

As per a recent study human induced industrial and agricultural processes have significantly impacted the rising anthropogenic nitrate levels in the North Pacific Ocean. The increases in atmospheric nitrogen deposition have the potential to:

1) Alter the base of the marine food web.

2) Alter structure of the ecosystem.

3) Increase ocean acidification.

Select the correct statement/s using codes given below:

1 and 2

2 and 3

1 and 3

All of the above

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Explanation:

All the statements are correct.
Human-induced changes to Earth's carbon cycle -- for example, rising atmospheric carbon dioxide and ocean acidification -- have been observed for decades. However, studies showed human activities, in particular industrial and agricultural processes, have also had significant impacts on the upper ocean nitrogen cycle.

The rate of deposition of reactive nitrogen (i.e., nitrogen oxides from fossil fuel burning and ammonia compounds from fertilizer use) from the atmosphere to the open ocean has more than doubled globally over the last 100 years. This anthropogenic addition of nitrogen has reached a magnitude comparable to about half of global ocean nitrogen fixation (the natural process by which atmospheric nitrogen gas becomes a useful nutrient for organisms).

Impact on Ecosystem and Food Web--- It severely affect marine ecology, leading to algal blooms and 'dead zones' with low oxygen levels.
Impact on Ocean Acidification- On a global scale, the alterations in surface water chemistry from anthropogenic nitrogen and sulfur deposition are a few percent of the acidification and it is mainky due to the oceanic uptake of anthropogenic CO2.