Which of the following is the primary cause of oceanic dead zones?
Increased nutrient pollution from agricultural runoff and wastewater
Overfishing and depletion of marine life
Rising sea temperatures due to climate change
Oil spills and plastic debris
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Which of the following best describes an oxygen sag curve?
A plot showing the decrease in dissolved oxygen levels as pollutants are diluted over time
A graph showing the recovery of dissolved oxygen after the removal of pollutants
A graph depicting the change in dissolved oxygen levels as pollutants, such as excess nutrients, are introduced into a water body
A curve representing the increase in dissolved oxygen levels due to the presence of aquatic plants
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Which of the following is not a primary cause of ocean acidification?
Increased CO2 absorption by the oceans
Emissions from burning fossil fuels
Excessive nitrogen runoff from agricultural activities
Deforestation reducing CO2 absorption by trees
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