Is there a list to pick from
Answer:
C
Explanation:
Flowing water wears away at dirt and rocks
The dyes <span>changes</span> color because a chemical reaction has takes
place in the medium. When universal
indicator is added to a solution, the color changes which indicate the
approximate pH of the solution. It also means that there is a change in
the concentrations of an acid and a base.
I think the reservoir ( a human,animal or non living such as soil where the infectious agent normally lives)
secondly the mode of transmission,there are some modes of transmission that allow the pathogen to enter quickly and some that make the process slow.
and also crowding and the presence of co-infections.
i hope this helps
Answer:
i think the last option might be correct