Coral Bleaching

We research about coral bleaching and ways we can try to stop coral bleaching
Priti Kanakala Yogita Marla
Grade 7


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How do we prevent coral bleaching? How can we help stop coral bleaching by doing basic things?  



these are our steps 

1)what is coral bleaches?

2)what temperatures does coral bleach quicker?  

3)How can you hep prevent coral bleaching?   

4)How does pollution affect the ocean?     

5)Reducing your carbon footprint?




what is coral bleaching?                                                                                                                                                                                                             When H2O (water) is too warm the corals expel algae. Corals need algae since the algae produce oxygen to help the coral remove its waste. The algae live in the corals' tissue, so when the coral expels the algae the coral turns gray or the coral is bleached.              

Since greenhouse gases emit heat some of that heat energy enters the ocean which causes the coral to bleach since the ocean is warm.            




For are experiment:   

When we added 2 tablespoons of vinegar into are warm water and dipped  the eggshells  in that water. Since the water wasn't so warm it took an hour or so to bleach(our egg to lose color)   


when we added one tablespoon of vinegar into are warm and dipped the eggshells in that water. The water was just a little bit warmer then the previeous experiment. So it also took the same time as our previous experiment to bleach.   

When we added 1/2 of a table spoon of vinegar in are boiling water(it's on a stove) the eggshell started to bleach quicker( the eggshell lost it's color in 10min or a bit longer)   



 Coral bleaches when coral is in warm water and high concentrations. Now if you relate our coral bleaching experiment the coral starts bleaching when the water is warm. The ocean turns warm because of pollution(in the experiment it would be the salt and the vinegar). Since the ocean is warm the coral starts losing algae(in the experiment in would be the food coloring). Algae and the coral have a mutualistic relationship, so the algae helps the coral to remove it's waste while the coral keeps the algae protected and making sure the algae photosynthesizes. So the coral reef also helps algae which many fish feed on.       




Thanks to...

Ms. Ho (Math/Science Teacher)

Ms. Ontko (Head Science Fair Teacher)



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