I want to know the answer to the following question:
From 1876 to 1973, how much did the glaciers that covered the Alps shrink?
All the background I'm provided with is that "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.". Is that enough to answer the question?
Answer: yes