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water
carbonates from soil
carbon dioxide
oxides of mineral elements
Ozone consists of
Ozone hole refers to
Ozone layer above earth’s atmosphere will
Ozone layer in the outer atmosphere helps us in
Ozone saves the biosphere by absorbing high energy radiations called _.
Paleontology is a branch of science that deals with the
Paper is manufactured by
Paper of old books turns to brownish color due to
Paraffin wax used for making candles is obtained from
Particulates (< 1 µm size) remaining suspended in air indefinitely transported by wind currents are called