19. Coal which is a little over 200 million years in age is _______________________ .*1 point(a) tertiary coal(b) gondwana land coal(c) lignite coal(d) peat
Question
- Coal which is a little over 200 million years in age is _______________________ .*1 point(a) tertiary coal(b) gondwana land coal(c) lignite coal(d) peat
Solution
The answer is (b) gondwana land coal.
Here's why:
The age of coal is determined by the period of time it was formed. Gondwana coal refers to coal deposits that are approximately 200-250 million years old, formed during the Carboniferous and early Permian periods. This time frame matches the age mentioned in the question, making Gondwana land coal the correct answer.
Tertiary coal, on the other hand, is much younger, formed only 65 million years ago. Lignite and peat are types of coal based on their carbon content and energy value, not their age.
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