Select some ways humans impact the nitrogen and phosphorous cycles.
1:Fertilizers cause an excess of these elements in the cycles.
2:Humans do not impact the nitrogen and
phosphorus cycles.
3:Sewage leaks cause an excess of these elements in the cycles.
4:Humans exhale it and the greater the population, the greater the amounts.
5:Pollution cause by waste water has a huge impact in the concentration of these elements as
waste product from humans contains excessive amounts of phosphorus and depending on
the individual's diet, low forms of nitrogen.
