To calculate the amount of nitrogen pollution in the park, USGS and CSU scientist Jill Baron needs to know two things: How much nitrogen is in rain, snow, and lake water; and how much water is in rain, snow, and the lake
linkTo calculate the amount of nitrogen pollution in the park, USGS and CSU scientist Jill Baron needs to know two things: How much nitrogen is in rain, snow, and lake water; and how much water is in rain, snow, and the lake
link