How do fire ants create floating rafts during floods?

Fire ants cluster in water

Phenomenon Description: A large mass of fire ants floating on top of floodwaters.
Location: Columbus County
Grade Level or Course: 4th grade
Question: How do fire ants create floating rafts during floods? 
Crosscutting Concept: Structure and Function 
Science Domain: Life Science 
NC Standard: LS.4.1 Understand the effects of environmental changes, adaptations, and behaviors that enable organisms to survive in changing habitats. 
NC Objective: LS.4.1.1 Use models to explain that plants and animals have external structures that function to support survival. 
Photo Credit: Fire ants cluster in water Wikimedia Commons CC BY-SA 3.0.jpg

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