Response to EACH question must be a minimum of 200 to 250 words :
1. Use an example of any drug or chemical, discuss how the route of exposure can affect the toxicity.
2. Describe how toxicant absorption is limited for inhalation, absorption, and ingestion.
3. Identify the four categories of street drugs; for one of them include at least two examples. Discuss the routes of exposure and how it affects the toxicity. Include all treatments.