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Known petroleum reserves are estimated to last about:

ASixty years
BEighty years
CForty years
DNinety years
Answer & Solution
Correct answer: C. Forty years
1. Fossil fuels formed from biomass millions of years ago. 2. Petroleum may last about forty years. 3. Coal may last two hundred years. _Source: syllabus Science, Chapter 16, Sustainable Management of Natural Resources._
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