Question 5006 of 234 · California Wastewater Operator Exam
The pH of a healthy pond during the day is usually
Exactly one answer is correct.
You got of questions right. Here on the question pages nobody remembers which ones you got wrong. The trainer saves your progress and asks the mistakes again until they stick.
Or free: the 10 questions most people get wrong
Show solution
Correct answer to question 5006
- A: higher than at night because algae use up carbon dioxide
Explanation
Algae remove CO2 during photosynthesis, so pH rises in the daytime. At night respiration releases CO2 and pH falls.
More questions: Stabilization Ponds
- 5007A pond that turns from green to gray or black and develops strong odors has most likely
- 5008A pond that is pink or red in color is often due to
- 5009Which is a common method to control emergent vegetation on pond dikes?
- 5010Which animal activity may seriously damage pond dikes?
- 5011The organic loading rate of a pond is typically expressed as
- 5012What is the typical total detention time in a pond system for facultative treatment?