WILL GIBE BARIM Mutations .

decrease the genetic diversity of a population

are always harmful

cannot be acquired from the environment

happen when DNA changes during replication

B"hf and f-"  is the correct answer took the test on edgenuity and got it right     

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