The Chemical Industry (Grade 12 NSC Matric Physical Sciences): Flashcards
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Eutrophication definition
Eutrophication definition
Water over-enriched with nutrients, causing rapid plant growth
Two key nutrients in eutrophication
Two key nutrients in eutrophication
Nitrogen and phosphorus
Two main causes of eutrophication
Two main causes of eutrophication
Agricultural runoff and sewage discharge
Effect of eutrophication on oxygen
Effect of eutrophication on oxygen
Depletes oxygen levels in water
How eutrophication decreases biodiversity
How eutrophication decreases biodiversity
Blocks sunlight, depletes oxygen, kills fish and organisms
Function of buffer zones
Function of buffer zones
Trap nutrients and sediments before reaching water systems
Benefit of nitrogen testing for farmers
Benefit of nitrogen testing for farmers
Apply only required fertiliser, prevent runoff, save costs
Six macronutrients in fertilisers
Six macronutrients in fertilisers
Carbon, hydrogen, oxygen, potassium, nitrogen, phosphorus
Product of the Haber process
Product of the Haber process
Ammonia
Toxicity issue from eutrophication
Toxicity issue from eutrophication
Some plants are toxic, accumulate in food chain