To fully understand exactly what a fossil is, look at how they are made. A fossil is the mineralized remnants or impressions of once-living organisms as stated by actionbioscience.org. In other words, the remains of plants and animals from the past that have been encased in rocks. Dinosaurs for instance don’t exist today, however evidence of fossil records leads to proof that dinosaurs once existed on Earth. Fossils are customarily found in sedimentary rock which is molded by layers of silt or mud on top of each other thus, the resulting rock contains a series of horizontal layers, or strata. As these sedimentary rocks form, they bury the organism, bones, pollen, and shells, which over time will fully encase, and form a fossil. “The fossil record clearly shows changes in life through almost any sequence of sedimentary rock layer” (www.agiweb.org)
Each layer of sedimentary rock contains fossils are conventional for a specific period during which they were created over time. This fossilization easily opens a “window to the past” of how organisms have grown more complex, physically, and biologically, and gives us clear proof of the Evolution Theory. Confirming that over time, life has become very complex and is slowly gradually changing on Earth making evolution clear proof.
Moving on from Fossil ...
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...tic Mistakes, Natural Selection and Biological Change | Suite101.com." Genetics & Evolution | Suite101.com. N.p., n.d. Web. 30 Nov. 2014.
Darwin, Charles. The Origin Of Species. New York: Signet Classics, 2003. Print.
"Evolution: Fact and Theory (ActionBioscience)." ActionBioscience - promoting bioscience literacy. N.p., n.d. Web. 30 Nov. 2014.
John. "Evolution and the Fossil Record by John Pojeta, Jr. and Dale A. Springer." American Geological Institute - Serving the Geosciences Since 1948. N.p., n.d. Web. 29 Nov. 2014.
King, Robert C., Pamela K. Mulligan, and William D. Stansfield. A Dictionary of Genetics. New York: Oxford University Press, USA, 2006. Print.
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