How are SIAL, SIMA, NIFE useful for us?
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in manyways they are useful
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Answer:
Sial (continental crust)
silicon and aluminium which is continental crust it provides land to living things
Sima (oceanic crust)
silicon and magnesium which is oceanic crust formed under ocean helps aquatic plants and animals to live in the ocean
Nife (core)
nickel and ferrous which is a formula of iron is called core of the earth . core is called Nife bcoz it is made of heavy metals such as nickel and iron . it helps to keep the earth warm
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