Final answer:
Temperature stratification occurs in all of the given options: lakes, oceans, rivers, and ponds.
Step-by-step explanation:
Temperature stratification occurs in all of the given options: lakes, oceans, rivers, and ponds. Stratification refers to the layering of water in a body of water based on temperature. During the summer, lakes and ponds experience thermal stratification, where the upper layer of water is warmed by the sun and does not mix with the deeper, cooler water. Oceans also undergo temperature stratification due to differences in water temperature at various depths. Rivers may also have temperature stratification, especially if they have different sources of water with varying temperatures.