Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
A forest of coniferous trees can be seen along a mountain. The tree line can be seen, which is the point at which trees stop, because conditions for growth become unideal.
Public Domain.
