Dissolved Oxygen (DO) is critical to the ecology of an aquatic ecosystem. It can be affected by temperature, pollution, and numerous other factors. When the oxygen produced by photosynthetic plants in the water dissolves in the water, which of these is being formed?
A) atoms
B) a compound
C) an element
D) a solution

Answer(28.02g/mol);

Answer:             1.0  × 10⁻⁵ msolution:                     as we know ph is given as,                                    ph  = -log [h⁺]and,                                    [h⁺]  =  10^-ph    (1)putting value of ph in eq. 1,                                    [h⁺]  =  10⁻⁵                                    [h⁺]  =  1.0  × 10⁻⁵ m

3is your answer to yuor question

The answer is  a: x-rays—2 and ultraviolet rays—3.  hope i !