*Water*
Explanation:
Abiotic Factor is non-living.
Also viruses have nucleic acid whether DNA or RNA nucleic acid, they are so minute that you can't observed them,
it's letter C, they are also responsible for proteins. their cell wall is made up of capsid.
Well to I don't know what you mean by in the following cases but, a dependent variable is the variable being tested and measured and also relies on the independent. While on the other hand the independent variable is the variable that is being changed or controlled.
