1. (1) The conditions under which many food animals are raised are unhealthy for humans. (2) To keep these animals alive, large quantities of drugs must be administered. (3) These drugs remain in the animals' flesh and are passed on to the humans who eat it.
2. (1) The development of carbon-embedded plastics, otherwise called "composits," is an important new technology because (2) it holds the key for new aircraft and spacecraft designs. This is so because (3) these composits are not only stronger than steel but lighter than aluminum.
3. (1) Homework stifles the thrill of learning in the mind of the student. (2) It instills an oppressive learn-or-else discipline. (3) It quenches the desire for knowledge and the love of truth. For these reasons (4) homework should never be assigned.
The following arguments were abstracted from newspaper articles, editorials, and letters to the editor. Use the method presented in this section to construct argument patterns. If a statement is redundant or plays no role in the argument, do not include it in the pattern.