1. Wadanne nau'ikan kayan ruwan tabarau ne akwai? Kayan halitta: dutse crystal, babban taurin, ba sauƙin niƙa ba, yana iya watsa hasken ultraviolet, kuma yana da birefringence. Kayan wucin gadi: gami da gilashin inorganic, gilashin halitta da guduro na gani. Gilashin inorganic: Ana narkar da shi daga silica, calciu ...
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