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Coral Reef Calcification

Presentation for Science 9

Sara Krajewski

on 23 April 2010

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Transcript of Coral Reef Calcification

Ca2+ 2HCO3 CaCO3 + CO2 + H2O Coral Reef Calcification
By: Sara Krajewski Products in the reaction:

1 calcium
2 calcium
6 oxygen
2 calcium

Reactants in the reaction:

2 hydrogyn
2 carbon
6 oxygen
2 calcium
Elements in the equation:


There is no catalyst in this chemical reaction. Man-made carbon dioxide is getting into our air and the ocean is soaking it up This is causing the acidity in the ocean to rise When the acidity rises it causes many problems It reduces the amout of bicarbonate in the ocean and so then the coral cannot build and get bigger. All it can do is sit and die off. All the new septic waste, agricultural fertilizors and sediment is slowing the calcification process down. What is happening to our coral reefs? How does the calcification process work?? When the polar ice caps are melting this is causing the ocean to slowly get deeper. The sunlight cannot reach some of the coral which is stopping the photosynthesis from happening. Why is this process important to us? This gives people all around the world food. It keeps our economy growing with fishing and diving. The coral has been proven to have things in it to provide medicine to help with cancer treatments and HIV treatments. It protects some shorelines from the waves breaking down the beach and wash away the land. Bicarbonate (HCO3) combines with calcium ions in the water to make calcium carbonate (CaCO3, limestone). This process can occur both within organisms sucha s corals or as a simple chemical reaction in the water itself. In corals, calcium carbonate or lime stone is the building blocks in coral reefs. As corals produce calcium carbonate they slowly add on to their existing reef structure allowing the reef size to grow. Compare and Contrast! The colorful coral reef is filled with many species of fish and coral. It is a great home to many things in the ocean. Look after, it gets bleached. The calcification process has stopped. There is barely any fish living in the reef. There are barely any fish in the bleached reef. THE GOOD! THE BAD! THE END!!!
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