What is the term for A structure or behavior that helps an organism meet its needs survival?

The term for a structure or behavior that helps an organism meet its needs for survival is adaptation.

Here's why:

* Adaptation is a trait that has evolved over time to help an organism survive and reproduce in its environment. This can be a physical characteristic (like a bird's beak shape) or a behavioral characteristic (like a bird's migration pattern).

Let me know if you'd like more examples of adaptations!