It is sometimes stated that loudness is a subjective measure, often confused with physical measures of sound strength such as sound pressure, sound pressure level (in decibels), sound intensity or sound power.
The main food crops are barley, corn, potatoes, sugar beets, and wheat.. The Netherlands produces a variety of other crops, including tomatoes and other warm-weather foods which are grown in hothouses.
The Netherlands has a free-market economy and is one of the richest nations in the world. Dutch prosperity has always been based on international trade and industry. The country also benefits from rich agricultural land; much of it reclaimed from the sea and significant natural gas resources.