name three effects of nitrogen fertilisers

how are fertilisers linked to reduced species diversity?

What is meant by leaching?

describe how leaching occurs

what factors affect the rate/amount of leaching that occurs

What is meant by eutrophication?

describe the process of eutrophication

Explain how the leaching of nitrates from farmland into rivers may lead to a large increase in biochemical oxygen demand (BOD).
(5 marks)

Suggest and explain how any other environmental factor could influence the rate of leaf decomposition.
(2 marks)

What is the difference between the ways in which microbial decomposers and detritivores obtain their nutrients?
(2 marks)

The radioactive phosphate was absorbed by the plant and incorporated into organic compounds. Name two phosphorus-containing organic compounds and describe their importance in plants.
(4 marks)

Explain how each of the following could account for falling nitrate concentration.
1. algal growth
2.biological denitrification
(2 marks each)