eutrophication

Question 1

what does eutrophication cause

Answer 1

excessive richness of nutrients in a body of water, usually due to run - off from the land, causing a dense growth of plant life

Question 2

first process of eutroph.

Answer 2

leaching/nutrient load up
- nutrients from fertilizers are flushed from the land into rivers/lakes

Question 3

second process of eutroph.

Answer 3

plants flourish
- pollutants cause algal bloom
- e.g algae, duckweed

Question 4

third process of eutroph

Answer 4

algae blooms
- prevents sunlight reaching other plants
- other plants die, causing oxygen depletion

Question 5

fourth process of eutroph

Answer 5

decomposition further depletes oxygen
- dead plants are broken down down by bacteria, using up more oxygen

Question 6

eutrophication

Answer 6

chemical fertilisers from farms run off into freshwater, causing algal blooms and depleting the water of oxygen and other plants. even more oxygen is depleted by bacteria decomposers, ending in death of an ecosystem bc of critical oxygen levels