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Dead Zones and

Eutrophication Research by: Anthony, Emilliano, Macrina, Kevin. C



use fertilizer don’t realize that the chemicals in the fertilizer give nearby rivers too much nutrients.

Research Question: How does eutrophication/dead zones affect the Microsorum pteropus “windelov”?

ALGAE Hypothesis: If there are more fertilizer chemicals in the water, then the rate of photosynthesis or oxygen produced will decrease because of those excess chemicals.


Dead Zones and Eutrophications are usually natural occurences due to the build up of nutrients over time. But most of the time it is because many people who



Eutrophication: The process in which an algae takes over and absorbs all the oxygen in an area. Dead Zones: An uninhabitable area in the ocean; the product of eutrophication. Variable Groups: Control: The group in the experiment that you use to compare with. Experimental: The group you give the treatment to. Photosynthesis: The process in which plans use carbon dioxide, sunlight, and water to make glucose. Chlorophyll: The green pigment of most plants which absorb sunlight to start photosynthesis.

Methods Continued

liz Ferti

Length of study:

10 Days



Control Group


The Experiment

For Cups: Four teaspoons of soil, 150ml of water, and one “windelov� for each cup. For Experimental Group: 8oz of fertilizer every 2 days. For plants: No care needed for early stages

Control group percent difference between pre and post data was 12.5%.

Experimental group percent difference betwee pre and post data was 50%.

For both the experimental and control group percent differences, it was a 37.5% difference between the pre and post data.

Discussion Our experiment answered and comfirmed our hypothesis which made the plant lose its chlorrophyll because of the excess nutrients and lack of sunlight. Because the plants lost its chlorophyll, it got darker and it eventually died. Though we noticed that when we put the experiment plants in the controlled water, white specs came off of the pant and into the water. We couldn’t figure out what they were.

Although this answered our hypothesis and our investigation question, It wouldn’t really apply to the real world since the plant we were using was a fresh water plant, meaning that it could only be used in aquariums. It also means that it doesn’t belong to any food chains even though it is a producer

Discussion Cont’ Having this knowledge would have an impact on those who use fertilizer that don’t know that they are also hurting the environment. It might not prevent the use of fertilizer, but it can stop most farmers from using it and slow down the acidification of our oceans.

Anthony Flores' Infographic  
Anthony Flores' Infographic