Final answer:
Natural occurring biological hazards to people are viruses and Salmonella (option C), distinguishing them from chemical hazards such as DDT and endocrine disrupters.
Step-by-step explanation:
Naturally Occurring Biological Hazards
Natural occurring biological hazards to people are viruses and Salmonella. These are examples of biological agents that can cause disease in humans. Unlike chemical contaminants like DDT and endocrine disrupters, viruses and bacteria such as Salmonella are living organisms that can infect and multiply within the human body, leading to illness.
On the other hand, DDT is a chemical agent used as a pesticide that has lasting environmental impacts and can lead to biomagnification, affecting human health when consumed through the food chain. Similarly, endocrine disrupters are chemicals that can interfere with the endocrine system, potentially leading to a variety of health issues.
It is crucial to differentiate between biological hazards, which arise from living organisms, and chemical hazards, which originate from non-biological substances often introduced into the environment through human activity.