Question

iswar chandra vidyasagar lived in the nineteenth century India when very few people went - school. he founders school- calcutta which was later known as vidyasagar college . he wrote -bengali prime which is used even today. we are proud - vidyasagar for his great work - the field - education.
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Answer 1

Explanation:

Three basic types of magma:

Mafic or Basaltic-- SiO2 45-55 wt%, high in Fe, Mg, Ca, low in K, Na

Intermediate or Andesitic-- SiO2 55-65 wt%, intermediate. in Fe, Mg, Ca, Na, K

Felsic or Rhyolitic-- SiO2 65-75%, low in Fe, Mg, Ca, high in K, Na.