Final answer:
Aflatoxins, major carcinogenic substances, are produced by certain molds such as Aspergillus flavus and Aspergillus parasiticus. These molds can grow in various environments and contaminate staple commodities. When consumed, aflatoxins can enter the general food supply and be found in both pet and human foods, as well as animal products.
Step-by-step explanation:
Aflatoxins, which are major carcinogenic substances, are produced by certain molds, specifically Aspergillus flavus and Aspergillus parasiticus. These molds can grow in a variety of places such as soil, decaying vegetation, hay, and grains. Aflatoxins are commonly found in improperly stored staple commodities like cassava, corn, peanuts, rice, and wheat. They can enter the food supply and contaminate both pet and human foods, as well as animal feedstocks. When animals consume contaminated food, aflatoxin transformation products can be passed into their eggs, milk products, and meat.