Biological contamination or hazards can come from all of the following except?

Biological contamination or hazards specifically refer to harmful microorganisms or biological substances that can cause illness in humans. This includes various forms of bacteria, viruses, and parasites. The options provided include several types of biological hazards.

Bacteria represent a category of microorganisms that can contaminate food and cause foodborne illnesses. E. coli, a specific type of bacteria, is well-known for being a cause of contamination in food, particularly undercooked beef and contaminated vegetables. Seafood toxins arise from certain fish and shellfish that can accumulate harmful substances, posing a biological risk when consumed.

On the other hand, toxic metals are not classified as biological hazards. They refer to inorganic substances that can be present in food due to environmental pollution or leaching from containers, but they do not involve living organisms. Therefore, toxic metals are not considered biological contamination, which distinguishes them from the other options listed.