Figure 2.
(a) Satellite photographs of households in an established community, (b) a pueblo joven and (c) a recent invasion along a transect of Arequipa, Peru, 2011. (Online version in colour.)
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.