Alicia

SAND

Added 2022-07-18 14:11:11 +0000 UTC

Part I; Sand is a granular material composed of finely divided rock and mineral particles. Sand has various compositions but is defined by its grain size.

Part II; Sand is a non-renewable resource over human timescales, and sand suitable for making concrete is in high demand. Desert sand, although plentiful, is not suitable for concrete. 50 billion tons of beach sand and fossil sand is used each year for construction

Part III; Sand's many uses require a significant dredging industry, raising environmental concerns over fish depletion, landslides, and flooding. Countries such as China, Indonesia, Malaysia, and Cambodia ban sand exports, citing these issues as a major factor. It is estimated that the annual consumption of sand and gravel is 40 billion tons and sand is a US$70 billion global industry.