How do I gain the full marks in the question "Describe the stages of Eutrophication" (6 marks)?

Conveniently, there are roughly 6 main stages in the process of eutrophication, so if you can memorise each one, step by step, you are sure to scoring full marks!

1) Algae blooms block light

2) No photosynthesis, so plants die.

3) Saprobiotic decomposition occurs.

4) Microorganisms respire aerobically (use up oxygen)

5) Less oxygen for fish to respire, therefore they die

6) Increase in anaerobic microorganisms; release hydrogen sulphide/ nitrates/ toxic waste

7) Water becomes putrid

Please note: This answer has been written in note form to aid in your understanding and memorisation, but ALWAYS WRITE FULL SENTENCES IN EXAMS…examiners don’t like scrappy notes :) 

Answered by Amelia A. Biology tutor

13911 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

Cellular structure of the brain


What is osmosis?


Describe How Speciation Occurs Through Sympatric/Allopatric Speciation and What Are the Differences Between the Methods?


Describe two ways in which the process of cell division shown differs between plant cells and animal cells.


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2024

Terms & Conditions|Privacy Policy
Cookie Preferences