When an acute maximum residual disinfectant level (MRDL) has been detected, how soon will the water be re-tested?
within one day
within one week
within one month
within two months

where in your body is there an enzyme that does function at a high or low ph? what is the name of that enzyme and its function?

i wish i could with all of them i can barley see the first one so here's the answer to the first one b

d. changes in climate and historical records

hope this