#1
Which of the following is a major source of water pollution?
Volcanic eruptions
Industrial waste
Forest fires
Natural rainfall
#2
Which of the following is a common method for treating wastewater before it is released back into water bodies?
Filtration
Direct discharge
Open defecation
Littering
#3
What is the primary method for controlling oil spills in water bodies?
Bioremediation
Fertilization
Deforestation
Littering
#4
What does eutrophication refer to in water bodies?
Increase in dissolved oxygen levels
Decrease in aquatic plant growth
Excessive nutrient enrichment
Reduction in water temperature
#5
What is the primary cause of ocean acidification?
Carbon dioxide emissions
Industrial noise pollution
Plastic pollution
Oil spills
#6
Which of the following is a consequence of overfishing?
Increase in biodiversity
Decline in fish populations
Expansion of coral reefs
Enhanced ecosystem balance
#7
Which of the following pollutants is responsible for causing blue baby syndrome?
Lead
Mercury
Nitrate
Arsenic
#8
What is the primary effect of thermal pollution on aquatic ecosystems?
Decreased oxygen levels
Increased nutrient levels
Eutrophication
Altered habitat structure
#9
What is the primary cause of algal blooms in water bodies?
Low nutrient levels
High dissolved oxygen levels
Excessive nutrient runoff
Decreased water temperature
#10
What is the primary cause of hypoxia in water bodies?
Excessive algae growth
Increased fish population
High levels of dissolved oxygen
Decrease in temperature
#11
What is the primary factor contributing to the formation of dead zones in water bodies?
High biodiversity
Low nutrient levels
Eutrophication
Decreased temperature
#12
Which of the following is a major challenge in managing invasive species in water bodies?
Enhanced ecosystem services
Natural predator control
Difficulty in eradication
Increase in biodiversity
#13
Which of the following is a consequence of microplastic pollution in water bodies?
Increased fish population
Enhanced biodiversity
Health risks to marine organisms
Decrease in water salinity
#14
What is the primary impact of ocean deoxygenation?
Promotion of coral growth
Decrease in fish populations
Enhanced aquatic plant growth
Reduction in water acidity
#15
What is the primary cause of fish kills in water bodies?
High biodiversity
Low nutrient levels
Hypoxia
Eutrophication