Answer :
Final answer:
The biosphere, geosphere, and hydrosphere interact in the formation of coal.
Explanation:
The spheres that interact in the formation of coal are the biosphere, geosphere, and hydrosphere.
In the formation of coal, plant matter from the biosphere gets buried and undergoes a transformation due to pressure and heat from the geosphere. Water from the hydrosphere can also play a role in this process.
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