101. Most hazardous substances exhibit a "dose-response relationship". What does this mean? i) The harm caused by the hazard increases as the amount of hazard entering the body (dose) increases. ii) It does not matter how big a dose you receive, you will always have same amount of harm/sickness. iii) Exposure to the hazard always results in harm. iv) Fifty percent of the people will die when exposed to 0.1mg/kg