How much of the glaciation has disappeared in the country where, along with Germany and the country where Karin Thomas was born, Lake Constance can be found?
Forty percent
Title: Alps
Passage: High levels of precipitation cause the glaciers to descend to permafrost levels in some areas whereas in other, more arid regions, glaciers remain above about the 3,500 m (11,483 ft) level. The 1,817 square kilometres (702 sq mi) of the Alps covered by glaciers in 1876 had shrunk to 1,342 km2 (518 sq mi) by 1973, resulting in decreased river run-off levels. Forty percent of the glaciation in Austria has disappeared since 1850, and 30% of that in Switzerland.
Title: Rhine
Passage: Lake Constance consists of three bodies of water: the Obersee ("upper lake"), the Untersee ("lower lake"), and a connecting stretch of the Rhine, called the Seerhein ("Lake Rhine"). The lake is situated in Germany, Switzerland and Austria near the Alps. Specifically, its shorelines lie in the German states of Bavaria and Baden-Württemberg, the Austrian state of Vorarlberg, and the Swiss cantons of Thurgau and St. Gallen. The Rhine flows into it from the south following the Swiss-Austrian border. It is located at approximately 47°39′N 9°19′E﻿ / ﻿47.650°N 9.317°E﻿ / 47.650; 9.317.
Title: Karin Thomas
Passage: Karin Thomas (born 3 October 1961 in Brusio) was a Swiss cross country skier who competed from 1982 to 1988. She finished sixth in the 4 x 5 km relay at the 1984 Winter Olympics in Sarajevo and fourth in that same event at the 1988 Winter Olympics in Calgary.
Title: Brusio spiral viaduct
Passage: A signature structure of the World Heritage-listed Bernina railway, it is located near Brusio, in the Canton of Graubünden, Switzerland, and was built to limit the railway's gradient at that location within its specified maximum of 7%.
Rhine Alps Brusio spiral viaduct Karin Thomas