If you collect a jar of muddy water from a puddle or ditch, and then let the mud settle out over many hours, you have separated much of the mud from the water using a process very much like the:.A) grit chamber in a wastewater facility. B) primary treatment in a wastewater facility. C) secondary treatment in a wastewater facility. D) trickling-filter system in a wastewater facility.

You isolate an infectious substance capable of causing disease in plants, but you do not know whether the infectious agent is a bacterium, virus, viroid, or prion. you have four methods at your disposal to analyze the substance and determine the nature of the infectious agent.i. treat the substance with enzymes that destroy all nucleic acids and then determine whether the substance is still infectious.ii. microscope.iii. culture the substance on nutritive medium, away from any plant cells.iv. treat the sample with proteases that digest all proteins and then determining whether the substance is still infectious.if you already know that the infectious agent was either bacterial or viral, which method(s) listed above would allow you to distinguish between these two possibilities? a) ib) iic) ii or iiid) iv