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.
Examples of low- (top) and high- (bottom) density social networks. In a sparse social network, the degree of interconnectedness among a mother’s social contacts is low (few people known each other). In a high-density network, the mother has a high number of ties who have relationships with each other.
