Which nutrient cycle is most affected by the over-use of ammonia fertilizers on commercial farms

Brainliesttt me asap! the below reaction can be categorized as more than one type of reaction. which reactions are these, and what are the types of reactions?

In a heat of an engine, if 700 j enters the system, and the piston does 400 j of work what is the final internal (thermal) energy of the system if the initial energy is 1,500 j

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %