Figure 4.
Distribution of Cd points.
Note: The black and white dots show the sampling points with high Igeo (Igeo > 0) and the remaining, respectively.
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.