1. One of the early methods to produce brick was to mix clay and straw and dry the mixture in the sun. This is an example of a

a. Physical process

b. Chemical process

c. One of the procedures is physical and the other chemical

2. Which of the following correctly describes a risk and not a benefit when considering irradiated food?

a. Irradiation does not create changes to the food that would make the food harmful if ingested

b. Irradiation of food may destroy some of the nutrient value of the food

c. Irradiation of food destroys harmful bacteria in the food