A water treatment plant needs to maintain the ph of the water in the reservoir at a certain level. To monitor this

Maintained of Water

Explanation:

pH is a proportion of the measure of Hydrogen particles (H+) even in unadulterated water particles will in general structure because of irregular procedures (creating some H+ and OH-particles). The measure of H+ that is made in unadulterated water is about equivalent to a pH of 7. That is the reason 7 is neutral.A repository can likewise be shaped from a characteristic lake whose outlet has been dammed to control the water level.The dam controls the measure of water that streams out of the repository.  Expanded fluctuation and power of precipitation because of environmental change is relied upon to create both progressively extreme dry spells and flooding, with possibly genuine ramifications for water supply and pollution from combined sewer overflows.

That is true tge cactus as a structural adaptation to its envirinment has it leaves reduced to spines. but this doesnt mean it cant produce food it produces food because of the presence of chlorophyll in its stem