About 300 million years ago the earth had dense (i) in low lying wetland areas. Due to natural processes like flood, these forests got buried under the (ii) . As more (iii) deposited over them, they were compressed. The (iv) also rose as they sank deeper and deeper. Under high (v) dead plants got slowly converted into coal. a. (i)- soil, (ii)- water, (iii)-water, (iv)-temperature, (v)-pressure b. (i)- forest, (ii)- soil, (iii)-soil, (iv)-temperature, (v)-pressure c. (i)- soil, (ii)- water, (iii)-water, (iv)-pressure, (v)-temperature d. (i)- forest, (ii)- water, (iii)-water, (iv)-temperature, (v)-pressure
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Origin and occurrence of coal - definition
about 300 million years ago the earth had dense forests in low lying wetland areas. Due to natural processes,like flooding , these forests buried under soil.As soil deposited over them they were compressed.
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