7. Why is the primitive subsistence amb
8. Name the two geological coal deposits found in India with their age.
9. How is geothermal energy produced? Name a place where geothermal energy is produced in India.
by decentralisation in democracy?
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9-two main geological ages. The Gondwana coal was formed over 200 million years ago. The tertiary deposits are about 55 million years old. The major sources of Gondwana coal are located in the Damodar valley (West Bengal-Jharkhan).
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