There are three (3) questions to be answered:

The response must be at least 275 words in length for each answer. You must use the textbook as source material for the response. You may use more sources if you require them to answer the question completely, but you must also cite them within the answer.
Per 6th edition of the Publication Manual of the American Psychological Association (APA) rules for formatting, quoting, paraphrasing, citing, and listing of sources are to be followed. Be sure to use APA formatted in-text citations to identify sources for information. Note that in-text citations are required even if the information has been reworded. Citations are utilized when a phrase, a piece of specific information, or a sequence of sentences is drawn from an outside source. (Note that unmonitored websites, such as Wikipedia, are not acceptable.).
Q1: Use an example of any drug or chemical; discuss how the route of exposure can affect the toxicity.

Q2: Describe how toxicant absorption is limited for inhalation, absorption, and ingestion.

Q3: 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.