Construction managers, also called general contractors or project managers, typically do the following: 1  Prepare and negotiate cost estimates, budgets, and work timetables. 2  Select appropriate construction methods and strategies. 3  Interpret and explain contracts and technical information to workers and other professionals.
Denitrification is the process that converts nitrate to nitrogen gas, thus removing bioavailable nitrogen and returning it to the atmosphere. Dinitrogen gas (N2) is the ultimate end product of denitrification, but other intermediate gaseous forms of nitrogen exist (Figure 7).
The Sources and Solutions: Fossil Fuels Cars and trucks release nitrogen into the atmosphere, which contributes to nutrient pollution in our air and water. Airborne nitrogen pollution affects not only the quality of the air we breathe, but also the land and the water.