Similarity is the circulation of water and the difference is its location where it occurs.
Explanation:
Ocean upwelling is a phenomenon in which dense, cooler, and usually nutrient-rich water from deep water are moved by the wind towards the ocean surface, which replaces the warmer surface water while on the other hand, fall turnover is the time when the water temperature is uniform throughout the water body. Both ocean upwelling and fall turnovers are similar to each other due to circulation of water with the help of wind. Both ocean upwelling and fall turnovers occurs in different location, ocean upwelling occurs on the shore whereas fall turnovers occurs in every part of water body.
The answer is A. Air because our sound travel in the air so bat`s waves should travel in the air to find the insects that are flying in the air! :))) i hope this is helpful have a nice day
