Eutrophication

Question 1

Explain how the process of eutrophication can happen in a stream - 1

Answer 1

Overuse of nitrates/fertilisers
Nitrates leach out of soil by rain water where they then dissolve in rain water
Nitrates dissolved in rain water move into streams

Question 2

Explain how the process of eutrophication can happen in a stream - 2

Answer 2

Algae then grows rapidly
Plants underneath surface cannot grow and photosynthesise
These underwater plants die and no oxygen is produced