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Why acidity matters?

By absorbing more CO2 than average,  the ocean is becoming more acidic, and this is happening at a faster rate than during any other period in the past 300 million years.

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Why acidity matters?: Exhibitions

The concentration of CO2 in the atmosphere has increased dramatically in recent years. During this time, the pH of surface ocean waters has fallen by 0.1 pH units. This might not sound like much, but the pH scale is logarithmic, so this means a dramatic change in ocean acidity. In other words, this change represents approximately a 30 percent increase in acidity.

Think about this situation in a more precise scenario:

A drop in blood pH of 0.2-0.3 can cause seizures, comas, and even death. Similarly, a small change in the pH of seawater can have serious effects on marine life, especially those skeleton-building creatures such as corals, oysters, and clams are particularly more sensitive to slightly acidity change.

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Why acidity matters?: Image

This video shows the difference in swimming behavior and shell dissolution between a pteropod in seawater with low surface CO2 conditions and that of a pteropod exposed to elevated CO2 conditions.

At Home Activities
Why acidity matters?: Virtual Tour
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