Question: Why is there growing concerns about land use in Switzerland?
About the article "Switzerland", section "Urbanization".

Candidate passages:
Between two thirds and three quarters of the population live in urban areas.
Switzerland has gone from a largely rural country to an urban one in just 70 years.
Since 1935 urban development has claimed as much of the Swiss landscape as it did during the previous 2,000 years.
This urban sprawl does not only affect the plateau but also the Jura and the Alpine foothills and there are growing concerns about land use.
However from the beginning of the 21st century, the population growth in urban areas is higher than in the countryside.
Switzerland has a dense network of cities, where large, medium and small cities are complementary.
The plateau is very densely populated with about 450 people per km2 and the landscape continually shows signs of man's presence.
The weight of the largest metropolitan areas, which are Zürich, Geneva–Lausanne, Basel and Bern tend to increase.
In international comparison the importance of these urban areas is stronger than their number of inhabitants suggests.
In addition the two main centers of Zürich and Geneva are recognized for their particularly great quality of life.
With high lead content in CRTs, and the rapid diffusion of new, flat-panel display technologies, some of which (LCDs) use lamps which contain mercury, there is growing concern about electronic waste from discarded televisions.
Related occupational health concerns exist, as well, for disassemblers removing copper wiring and other materials from CRTs.
Further environmental concerns related to television design and use relate to the devices' increasing electrical energy requirements. 
Access to and use of land for infrastructure activities often gives rise to disagreements in Indonesia.
Some concerns have already been expressed about land issues in connection with the project.
A second set of technical issues concerns the geological risks involved in locating such a major project close to sites of possible volcanic activity.
The Krakatoa island group, for example, is nearby.
A third set of concerns relates to whether it is best to build a bridge at all, or whether alternative approaches (such as improved ferry services) might be a better way of responding to the rapidly-growing demand for improved transport services across the strait. 
Health On the Net Foundation (HON) is a not-for-profit organization founded in 1995 under the auspices of the Geneva Ministry of Health and based in Geneva, Switzerland.
This came about following the gathering of 60 of the world's foremost experts on telemedicine to discuss the growing concerns over the unequal quality of online health information.
The unanimous conclusion of this gathering was to create a permanent body that would, in the words of the program, "promote the effective and reliable use of the new technologies for telemedicine in healthcare around the world".
The HON Foundation became one of the first organizations to guide both lay users and medical professionals to reliable sources of health information in cyberspace. 
Rugby union in Switzerland is a minor but growing sport.