Representatives. The United States is divided into 435 congressional districts â 36 in Texas â each with a population of about 710,000 individuals. Each district elects a representative to the House for a two-year term. Representatives are also called congressmen/congresswomen.
Confronting the Causes of Urban Sprawl. Causes of urban sprawl include: 1  Consumer and real estate industry preference for large houses and large lawns.  Dislike of housing density by a vocal and often uninformed minority that equates density with public housing, undesirable apartment complexes and rental tenants, and traffic and noise.
Causes of Fragmentation. Habitat fragmentation usually occurs because of human activities such as new roads, parking lots and housing developments. Organisms need their specific habitat for survival, and fragmentation is a leading threat to many terrestrial animals.ogging is a major cause of habitat fragmentation in forests. Logging creates clear-cut, open ground areas that were once protected by the cover of trees. Logging roads that are built for the logging trucks to travel on can also be cut through forests, disrupting the habitat.