Text structures refer to the way in which information is organized and presented in a written text. Different types of text structures are used to convey different types of information and to help readers understand and process the information more effectively. Some common text structures used in informational texts include:

1. Chronological order: Information is presented in the order in which events occurred or steps should be followed. This structure is often used in historical texts or procedural texts.

Example: A biography of a famous person that presents their life events in the order they happened.

1. Cause and effect: Information is presented by explaining the causes and effects of a particular event or phenomenon. This structure is often used in scientific or historical texts.

Example: An article explaining the causes and effects of climate change.

1. Compare and contrast: Information is presented by highlighting the similarities and differences between two or more subjects. This structure is often used in comparative analysis or in texts that discuss pros and cons.

Example: A research paper comparing the benefits and drawbacks of different renewable energy sources.

1. Problem and solution: Information is presented by first describing a problem and then offering one or more solutions to address it. This structure is often used in persuasive or argumentative texts.

Example: An essay discussing the problem of pollution and proposing various solutions to reduce it.

1. Description: Information is presented by providing detailed descriptions or characteristics of a particular subject. This structure is often used in texts that aim to inform or educate readers about a specific topic.

Example: A textbook chapter describing the physical features and behavior of different animal species.

These are just a few examples of the many text structures that can be used in informational texts. The choice of text structure depends on the purpose of the text and the type of information being conveyed.