• In the classification/topical structure, a general topic is broken down into further related subtopics. It is usually used to give a general overview of a topic.

• In the chronological/sequential structure, ideas are described in a specific order. Chronological order refers to time order from the earliest to latest. Sequential order typically refers to the steps in a specific process.

• In the compare-contrast structure, the similarities and/or differences between two or more topics are examined.

• In the cause-effect structure, what led to a certain idea or event and the outcome of it being created or occurring are described.

• In the problem-solution structure, an issue facing people, society, or the world is described, and then current or potential solutions to the issue are explained.

• In the proposition-support structure, a judgment or claim about an idea or topic is expressed. In the rest of the text, facts, details, and opinions are used to support the original claim.

• Narrative structure typically includes the plot and setting of a story. The events in a story may be told in a linear or nonlinear manner.

These carnivorous creatures actively hunt on land during low tide, consuming insects, small crabs and shrimp, worms, and small fish stranded by the outgoing tide. They also vigorously fight to protect their land territories from other mudskippers and engage in elaborate courting rituals that involve the males' jumping high into the air to display their impressive pectorals.