#1
Which of the following is a major source of water pollution?
Industrial waste
ExplanationIndustrial waste is a significant contributor to water pollution, releasing harmful chemicals and pollutants into water bodies.
#2
Which of the following is a common method for treating wastewater before it is released back into water bodies?
Filtration
ExplanationFiltration is a common wastewater treatment method, removing impurities and contaminants before releasing water back into the environment.
#3
What is the primary method for controlling oil spills in water bodies?
Bioremediation
ExplanationBioremediation is a primary method for controlling oil spills in water bodies, using natural processes to break down and eliminate oil pollutants.
#4
What does eutrophication refer to in water bodies?
Excessive nutrient enrichment
ExplanationEutrophication occurs when water bodies receive an excess of nutrients, leading to increased algae growth and ecosystem disruption.
#5
What is the primary cause of ocean acidification?
Carbon dioxide emissions
ExplanationOcean acidification is primarily caused by the absorption of carbon dioxide emissions, leading to a decrease in pH levels.
#6
Which of the following is a consequence of overfishing?
Decline in fish populations
ExplanationOverfishing results in the depletion of fish populations, disrupting the balance of aquatic ecosystems.
#7
Which of the following pollutants is responsible for causing blue baby syndrome?
Nitrate
ExplanationNitrate pollution is linked to blue baby syndrome, a health risk particularly affecting infants exposed to high nitrate levels in drinking water.
#8
What is the primary effect of thermal pollution on aquatic ecosystems?
Decreased oxygen levels
ExplanationThermal pollution reduces oxygen levels in water bodies, harming aquatic life due to the alteration of temperature regimes.
#9
What is the primary cause of algal blooms in water bodies?
Excessive nutrient runoff
ExplanationAlgal blooms are caused by excessive nutrient runoff, promoting rapid and harmful growth of algae in water ecosystems.
#10
What is the primary cause of hypoxia in water bodies?
Excessive algae growth
ExplanationHypoxia is caused by excessive algae growth, which consumes oxygen and leads to oxygen depletion in water bodies.
#11
What is the primary factor contributing to the formation of dead zones in water bodies?
Eutrophication
ExplanationDead zones are formed due to eutrophication, leading to oxygen-deprived areas where marine life cannot thrive.
#12
Which of the following is a major challenge in managing invasive species in water bodies?
Difficulty in eradication
ExplanationManaging invasive species is challenging due to the difficulty in eradicating them, often resulting in ecological imbalances.
#13
Which of the following is a consequence of microplastic pollution in water bodies?
Health risks to marine organisms
ExplanationMicroplastic pollution poses health risks to marine organisms, affecting their well-being and the overall aquatic ecosystem.
#14
What is the primary impact of ocean deoxygenation?
Decrease in fish populations
ExplanationOcean deoxygenation leads to a decrease in fish populations, as marine life struggles to survive in oxygen-depleted waters.
#15
What is the primary cause of fish kills in water bodies?
Hypoxia
ExplanationFish kills in water bodies are primarily caused by hypoxia, leading to oxygen depletion and suffocation of aquatic organisms.