C seems like the correct answer
Is it just me or is there nothing there?
The study of how food interacts with genes is known as Nutritional Genomics, that encompasses nutrigenomics, which explores the effects of nutrients in the genome, proteome and metabolome, as well as nutrigenetics, whose main goal is to elucidate the effect of genetic variations on the interaction between diet and disease.
Alot of humans might not now they are even harming the systems by smoking or littering.
The virus that infect bacteria are called bacteriophage ! Hope this helps! :)