During summer,the amount of oxygen in the water is greatest at the bottom of ponds and lakes.

Question

Quizplus · Accepted Answer

During summer, the amount of oxygen in the water is actually lowest at the bottom of ponds and lakes because warmer water is less able to hold dissolved oxygen, and sunlight does not penetrate deep enough to allow for photosynthesis by aquatic plants which produce oxygen. Therefore, the surface of the water has the highest concentration of oxygen during summer.

During Summer,the Amount of Oxygen in the Water Is Greatest