a.What is bacteria
you can easily get disease from not washing you hands after cooking raw food and many more.Bacteria is a germ that you can't see but can hurt you and a possibility if killing you from a disease.Bacteria acan also cause food poisoning

b.What does bacteria need to survive.
Oxygen,moisture,food,temperature,time and neutral ph level.

c. Give 3 example of how to avoid spreading bacteria
Wash you hands,wash you clothing/wardrobe and don't use you hands to get ice.

d. What does 'cross contamination' mean.
Cross from one to another.