Environmental stressor that emerged from global

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warming. Environmental stressor that emerged from global climate change, such as elevated temperatures, have negatively affected the diversity of cnidarians, specifically through coral bleaching. When there is a significant change in the environment, including temperature, corals become stressed which leads to the coral bleaching. The corals have a mutualistic relationship with algae. The most important factor in the relationship is the zooxanthellae that the algae provide to the corals. Zooxanthellae is a minuscule plant that lives inside of the coral's tissues and provide around 90 percent of the coral's energy. However, when the temperature of the water begins to rise the algae will produce a toxic poison the makes the coral expel the
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zooxanthellae. This is what causes the coral to go completely white. Coral Bleaching also had some positive correlations with patterns of El Nino. In 1998, there most severe coral bleaching occurred as well as the most powerful El Nino. This trend was repeated in 2010 and was recording as the second global bleaching event. This can be seen in the figure. There is hope that some of the damage that has been done by global warming can be reversed. Bleached coral isn't dead, if the conditions were to go back to how they were previously quickly, the coral will begin to accept the zooxanthellae again. One way we can help in with a solution to global warming is by reducing our carbon footprint. This can be done by carpooling when you go to the beach to admire the beautiful coral you are helping.
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