This is pollution that comes from hard-to-trace sources with no obvious point of discharge.

The correct answer is nonpoint source pollution.

Explanation:

The NPS or nonpoint source pollution refers to the pollution arising due to various diffuse sources, which is different in comparison to point source pollution that results from a single source. The NPS pollution usually results from precipitation, land runoff, seepage, hydrologic modification, atmospheric deposition, or drainage.  

Nonpoint source pollution unlike pollution from sewage and industrial treatment plants comes from many diffuse sources. Some of the examples of nonpoint source pollution are:  

1. Oil, grease and toxic components from urban runoff and production of energy.  

2. Excess herbicides, fertilizers, and insecticides from residential regions and agricultural lands.  

3. Hydromodification and atmospheric deposition.  

4. Acid drainage from abandoned mines and salt from irrigation practices.  

due to the fact that it skipped a generation we can tell it is definitely not a dominant trait, therefore it must be recessive. i think this is right let me know!

explanation:

allowed for the prediction of the properties of missing elements.