C. Dirty hands ,is the correct answer.
Answer:
biological
Explanation:
Sneezing<u><em> releases microorganisms into the air.</em></u> If Joey sneezes into the food, he will be introducing the microorganisms into it that will potentially multiply and cause food-borne illness. This is an example of improper handling of food. Such situation is also considered a <em>cross-contamination</em>. It is biological in nature because living organisms contaminated the food.
Every cell in your body has the same genes/DNA but, the gene expression process decides which genes are active in which cells which is how each cell type gets it properties.
This damage can cause wastes to build up in your body and lead to other health problems, including heart disease, anemia and bone disease. Chronic kidney disease eventually can cause kidney failure if it is not treated.
