What is \(CaSO_4.2H_2O\) also known as?
Bauxite
Kieserite
Haemetite
Gypsum
Bauxite is an aluminium ore, haemetite is an iron ore, Kieserite is magnesium sulphate and gypsum is CaSO4.2H2O
What is ‘shifting cultivation’ also known as?