2. As the sun heats the surface of the oceans, two layers of water result. What separates the layers? WILL GIVE BRAINLEST

Thermocline.

Explanation:

The sunlight does not reaches deep inside the water called as the deep layer in which the temperature of water is low and it is cold. These two layers are separated by the middle layer called as the thermocline, which is warm at the top and cold at the bottom.

.) the observation by semmelweis that more mothers died of childbed fever when their doctors also worked in the morgue

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