### Question
Can you define what natural infrastructure means?


### Answer
**Natural infrastructure** is defined as the following in *23 U.S.C. § 101*:

> infrastructure that uses, restores, or emulates natural ecological processes and—


(A) is created through the action of natural physical, geological, biological, and chemical processes over time

#### Citation:
  - *23 U.S.C. § 101*
  - Heading: **CHAPTER 1-FEDERAL-AID HIGHWAYS**

