Extract B states that the global trade in sand has been ‘made possible by cheaper transportation’. With the help of a diagram, explain how cheaper transportation and a construction boom in East Asia have led to growth in the market for sand
Extract B: Is the world running out of sand?
Sand is in high demand. Sand accounts for up to 85% of all mining and the global depletion of sand is rapidly exceeding its natural renewal rate. Sand is mostly used in the construction industry to make concrete and asphalt. Chinese demand has risen significantly, reflecting the country's rapid pace of construction: it built 32.3 million houses and 4.5 million kilometres of road between 2011 and 2014. Sand also has industrial uses: it is used to make glass, electronics, and to help extract oil in the fracking industry. While market demand for industrial sand has tracked overall economic growth in the USA, the demand for fracking sand has been as volatile as oil prices
Vast quantities of sand are dumped into the sea to reclaim land: Singapore, for example, has expanded its land area by over 20% since the 1960s. Much of this sand originates from Indonesia, where sand miners have completely erased over 20 islands since 2005. The Maldives and Kiribati have used sand to shore up their islands against rising sea levels. The United Nations forecasts that, by 2030, there will be over 40 ‘megacities’, home to more than 10 million inhabitants (up from 31 in 2016), which means more housing and infrastructure will need to be built. Also, sea levels will continue to rise and so sand will only become more sought after. But why is there a shortage when sand seems so abundant? Desert sand is too smooth, and so cannot be used for most commercial purposes. Australian sand was shipped to a faraway desert to build Dubai’s Burj Khalifa tower, made possible by cheaper transportation. Most countries have rules in place about where, and how much, sand can be mined. However, surging demand has sparked a lucrative illegal trade in many rapidly developing countries which is damaging the environment, causing pollution and harming local biodiversity