In a long-term water-monitoring study, what environmental factors might influence the testing parameters of the wqi? how would you manage the study to eliminate these influences?

The environmental factors that influence the testing parameters of the WQI are precipitation, climate, flow conditions and groundwater. The quantity of water affects the quality of the water. Fast-flowing mountain streams have different chemical, physical and biological characteristics than slower moving boreal and prairie streams. Rains typically wash substances into river. If lowering water quality when you have the sample and tested water, the test would be more accurate.  

i believe you meant to say air rather than hair so the answer is below ")

the dead sea, the lowest place on earth at 430 metres (1,410 ft) below sea level, has a correspondingly high typical atmospheric pressure of 1065 hpa.

answer: ice crystals in air

the water from the water body or another source of water gets evaporated as water vapor as an effect of heat on water. these water vapor rises in the upper layers of the earth atmosphere under high atmospheric pressure. the atmospheric pressure of these water molecules starts to decrease due to the effect of cold air. the invisible water vapor condenses into visible water droplets and ice crystals.these ice crystals and water droplets being less denser than the surrounding air floats on air as clouds.