In a body of fresh water, a dissolved oxygen concentration of 0.262 mm or higher is usually needed to maintain a healthy aquatic ecosystem. for a lake to maintain this concentration, what is the maximum water temperature?

We are given that

DO = 0.262mM O2 

And since 1mM = 32mg/L 

Converting to mg/L:

DO = 32mg/L * 0.262mM

DO =8.4 mg/L = 8.4ppm 

Using the nomograph to identify the maximum temperature to maintain 8.4 ppm of DO concentration:

Max water temp is 26 ˚C .

correct answer: understand the different control methods available

integrated pest management is an strategy that is based on the ecosystem and try to prevent the pest and the damage caused by them by applying combination of technique like habitat manipulation, biological control and use of resistant varieties.

the main aim of the integrated pest management is not to completely eliminate the pest but to strengthen the ecosystem so that conditions are favorable for plants and unfavorable for pests.

not too sure but maybe in the hot springs.