recording results on a meter in nephelometric turbidity units (NTU). You must calibrate the instrument to convert between NTU and parts per million (ppm), because
temperature, and desiccation (drying out).For example, water depth and turbidity (density of particles in the water) together or separately control the amount of light available to the plants and the depth to which the seagrasses may extend.Althoughmarine botanist W. A. ...