Question

a daphnia population shows a vertical migration from the bottom of a one - meter - deep pond during the day to the surface of the pond at night. to which factor is the daphnia population most likely responding? the temperature of the water the pressure of the water clarity of the water the ph of the water

Explanation:

Daphnia perform vertical migration mainly in response to light - related factors which are often associated with the temperature gradient in a pond. During the day, they may move to deeper, cooler water to avoid predators and high light intensity, and at night move to the surface where it is warmer and there is more food. Temperature is a key factor influencing their migration behavior compared to pH, water clarity, and water pressure in this context.

Answer:

the temperature of the water