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Although most of the fossils that paleontologists study are several thousands to several billions of years old, there is no absolute minimum age for a biological structure to be a fossil.Paleontologists study fossils and attempt to use them to reconstruct the history of the Earth and the life on it.Harnessing its energy holds great promise for the world’s energy needs, and it will be heavily called upon as fossil fuels are depleted.There is a great deal of information and enthusiasm today about the development and increased production of our global energy needs from alternative energy sources.Anthropologists work with humans their cultures, societies, languages, and ways of life, in addition to their bones and artifacts.Some paleontologists do study the fossil record of humans and their relatives.Radiocarbon dating can be used on samples of bone, cloth, wood and plant fibers.
The arrowhead, which was previously buried in the soil popped to the surface.
Solar energy, wind power and moving water are all traditional sources of alternative energy that are making progress.
The enthusiasm everyone shares for these developments has in many ways created a sense of complacency that our future energy demands will easily be met.
Coal, oil and natural gas are the three kinds of fossil fuels that we have mostly depended on for our energy needs, from home heating and electricity to fuel for our automobiles and mass transportation. They are limited in supply and will one day be depleted. Fossil fuels formed from plants and animals that lived hundreds of millions of years ago and became buried way underneath the Earth’s surface where their remains collectively transformed into the combustible materials we use for fuel.
In fact, the earliest known fossil fuel deposits are from the Cambrian Period about 500 million years ago, way before the dinosaurs emerged onto the scene.
Alternative energy is an interesting concept when you think about it.