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1.
Sedimentary rocks are not resistant to weathering because, they
are formed from molten matter.
formed from other rocks.
have lines of weakness between mineral aggregates.
have lines of weakness between strata.
2.
Impurities found in bauxite are
SiO₂ and FeCl₃.
Fe₂O₃ and SiO₂.
FeO and CaO.
CaO and Fe₂O₃.