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relationships based on shared derived characteristics". Useful index fossils are found. over large area for a short time. Which of the following is evidence for the endosymbiotic theory? mitochondria and chloroplast contain dna similar to bacterial dna. Carbon is not useful for dating most fossils because. It has a very short. Carbon is not useful for dating fossils because. This rules out carbon dating for most aquatic organisms, because they often obtain at least some of their carbon from dissolved carbonate rock. Free online dating wichita ks. Geologists assert that generally speaking, older dates are found deeper down in the geologic. Such is the case because most rocks simply cannot. What is evidence for the endosymbiotic theory? Dating a fossil in terms of approximately how many.
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- Carbon is NOT useful for dating most fossils because. it has a very short half life. The half-life of potassium is about billion years. After four half-lives have passed, how much of the original sample will be left? 1/ Most fossils are found in. sedimentary rock. Why did oceans not exist in Earth nearly 4 billion years.
- relationships based on shared derived characteristics". Useful index fossils are found. over large area for a short time. Which of the following is evidence for the endosymbiotic theory? mitochondria and chloroplast contain dna similar to bacterial dna. Carbon is not useful for dating most fossils because. It has a very short.
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Scientists who specialize in the study of fossils are called? Sedimentary rocks regularly form when layers of small particles are compressed.
Using C to analyze rock layers.
Despite seeming like a relatively stable place, the Earth's surface has changed dramatically over the past 4. Mountains have been built and eroded, continents and oceans have moved great distances, and the Earth has fluctuated from being extremely cold and almost completely covered with ice to being very warm and ice-free. These changes typically occur so slowly that they are barely detectable over the span of a human life, yet even at this instant, the Earth's surface is moving and changing.
As these changes have occurred, organisms have evolved, and remnants of some have been preserved as fossils. A fossil can be studied to determine what kind of organism it represents, how the organism lived, and how it was preserved. However, by itself a fossil has little meaning unless it is placed within some context. The age of the fossil must be determined so it can be compared to other fossil species from the same time period.
Understanding the ages of related fossil species helps scientists piece together the evolutionary history of a group of organisms. For example, based on the primate fossil record, scientists know that living primates evolved from fossil primates and that this evolutionary history took tens of millions of years.
By comparing fossils of different primate species, scientists can examine how features changed and how primates evolved through time.
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Delineate your changes optional Carbon 14 with a half soul of 5, years can at best be used to date fossils of approximately 50, years. Max fossils are thought to be much older than 50, years. Also most fossils no longer contain any Carbon. The fossilized remains have been mineralized where the original organic material has been replaced and turned into stones containing no carbon.
Uranium has a half life of 4. Uranium can be cast-off to b the age of the earth.