1. Engineering can be defined as the application of scientific knowledge for practical purposes, especially in industry. While there are many definitions, engineering essentially represents techniques, processes, and methods used to create products and solve problems through textual representations. 2. Scientific texts are key to engineering because they represent phenomena, behaviors, and activities that comprise techniques. Complex technical documents are needed to explain operations to clients and technicians despite variations in use. 3. The main difference between science and engineering is that science aims to observe and explain while engineering aims to take action and create changes, though they share similar knowledge and both can be considered through textual representations.