Fossil wood is wood that is preserved in the fossil record. Their dinosaur fossils are primarily teeth recovered from microvertebrate fossil sites. The greenhouse gases due to fossil fuels drive global warming. Plastic is produced mainly from fossil fuels. Flows are production of fossil fuels from these reserves. PET is a petrochemical plastic, derived from fossil fuels. Commonly used derivatives of fossil fuels include kerosene and propane. Humanity's population sporadically grows and demands more energy provided by fossil and nuclear fuels. This was the highest amount ever paid for a dinosaur fossil. Other ghost towns were created in the aftermath of dinosaur fossil rushes. This was the deepest dinosaur fossil ever found and the first find for Norway. Young objected to the bank's association with fossil fuels. There are two phylogenetic hypotheses on the relationships among extant and fossil bear species. Kazakhstan has an abundant supply of accessible mineral and fossil fuel resources. There is debate about the various scenarios for fossil fuel consumption.