The ability of water to hold dissolved oxygen (DO) is

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Multiple Choice

The ability of water to hold dissolved oxygen (DO) is

Explanation:
Dissolved oxygen solubility in water decreases as temperature rises. When water warms, the molecules move more vigorously, reducing the tendency for oxygen to remain dissolved and making it easier for oxygen to escape into the air. This inverse relationship is described by Henry’s law: gas solubility in a liquid decreases as temperature increases. As a result, colder water can hold more dissolved oxygen than warmer water, which is crucial for aquatic life. Salinity can also lower solubility, but the main idea tested here is the temperature effect.

Dissolved oxygen solubility in water decreases as temperature rises. When water warms, the molecules move more vigorously, reducing the tendency for oxygen to remain dissolved and making it easier for oxygen to escape into the air. This inverse relationship is described by Henry’s law: gas solubility in a liquid decreases as temperature increases. As a result, colder water can hold more dissolved oxygen than warmer water, which is crucial for aquatic life. Salinity can also lower solubility, but the main idea tested here is the temperature effect.

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