Eutrophication

Which of the following best describes eutrophication?

• The process where water bodies become polluted by plastics.

• The accumulation of excessive nutrients in water, leading to algae growth.

• The mixing of saltwater and freshwater in coastal areas.

• 1. The increase in water temperature due to industrial activities.

Answer explanation

Eutrophication is best described as the accumulation of excessive nutrients in water, which leads to increased algae growth. This process can deplete oxygen in the water, harming aquatic life.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Which of the following is a common source of water pollution?

• Solar power plants

• Industrial waste discharge

• Wind turbines

• 1. Natural disasters

Which nutrient is primarily responsible for causing eutrophication in water bodies?

• Potassium and calcium

• Phosphorus and nitrogen

• Calcium and nitrogen

• Magnesium and potassium

Which of the following is an example of a point source of water pollution?

• Agricultural runoff

•  Oil spill from a pipeline

• Littering on a beach

• Acid rain

Which activity in agriculture commonly contributes to water pollution?

• Use of organic compost

• Excessive use of chemical fertilizers and pesticides

• Rotational farming practices

• Irrigation with clean water

Tags

NGSS.MS-ESS3-4

Which of the following is considered a biological pollutant?

•  Oil spill

• Plastic waste

• Pathogenic microorganisms

• Heavy metals

Tags

NGSS.MS-LS2-4

Which of the following is an example of nonpoint source pollution?

• Wastewater discharged from a factory

• Sewage spill from a broken pipeline

• Fertilizer runoff from multiple farms

• Leakage from an oil tanker

What is the primary effect of eutrophication on aquatic ecosystems?

• Increased oxygen levels

• Rapid algae growth leading to oxygen depletion

• Better water quality for drinking

• Reduced sedimentation in water bodies

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Which of the following is a common pollutant from industrial sources?

• Nutrients like nitrogen

• Heavy metals like mercury and lead

• Organic waste

• Pathogens

Tags

NGSS.HS-ESS3-4

NGSS.HS-LS2-7

Which domestic activity is a major source of water pollution?

• Cooking with natural gas

• Washing clothes with chemical detergents

• Using energy-efficient appliances

• Recycling household waste