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EUTROPHICATION

This PowerPoint is about the process of eutrophication

Sreenanda
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EUTROPHICATION

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  1. 8th Grade EUTROPHICATION Done by Group 2

  2. What is Eutrophication?

  3. Explanation of Eutrophication Eutrophication is the process that happens in a water body like a river or a lake when too many nutrients are added to the land. Eutrophication starts with fertilizers which are rich in nutrients like nitrate and phosphate are washed into the river or lake system.This leads to an increased nutrient concentrations(Close gathering of nutrients) in water.The nutrients are food for the algae.The algae grow and reproduces quickly forming a thick green bloom in the water.

  4. The algal bloom will absorb sunlight shining on the water .So the sunlight can't reach the bottom.Plants need this light for photosynthesis will die .The algae will also start to die when they eat up all of the nutrients and ran out of food.Next, bacteria start to breakdown the dead plants and algae.That releases more nutrients back into the water continuing the algal bloom cycle.

  5. The bacteria with a continuing supply of food, reproduce into much large numbers consuming oxygen as they grow and respire.There is not much oxygen in the water to begin with.So when the bacteria consume it quickly it might run out completely.Water without oxygen is called Anoxic.If the water turns anoxic,all non bacterial life in the water,including fish and other animals, will die.

  6. So,Eutrophication happens when nutrients are added to water which causes an algal bloom,cutting of sunlight and feeding bacteria.The bacteria use up oxygen in the water which becomes anoxic causing everything living in water to die.Eutrophication is one reason why we need to be careful with fertilizers when growing crops.

  7. How Eutrophication happens...

  8. Here is a video https://youtu.be/SwU_kyWCRn8

  9. THANKYOU Done by Group 2

  10. The Team Sreenanda Sajesh Sivani Juanita Tanushree Diya Shagun Joan Riya Antony Annshia

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