Answer to Question 1
Most cultural hazards are those that humans purposefully expose themselves to because it is culturally acceptable for them to choose to do so. Smoking is an excellent example of a cultural hazard that makes an environmental impact. See Stewardship, A Cultural Hazard Worsens Other Risks.
Answer to Question 2
Cultural hazardssmoking, obesity, alcohol and drug use, risky sexual practices, too little exercise, hazardous occupations, sunbathing, driving too fast. Biological hazardsdiseases caused by bacteria, viruses, protozoans, fungi, worms, etc. Physical hazardshurricanes, tornadoes, floods, forest fires, earthquakes, landslides, volcanic eruptions, climate change. Chemical hazardschemicals that cause acute, subacute, chronic, or delayed responses in humans, carcinogens, teratogens, immunotoxins, hormonally active agents.
The principal components of a spectrophotometer
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Environmental Issues
Sustainability and the Development within Environmental Constrains
Environmental Science: Toward A Sustainable Future, 13th Edition