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Evolution
Title: Evolution
Category: Science & Technology / Biology
Details: Words: 928 | Pages: 3.9 (approximately 235 words/page)
Evolution
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Essay on Evolution
There are many mechanisms that lead to evolutionary change. One of the
most important mechanism in evolution is natural selection which is the
differential success in the reproduction of different phenotypes resulting from the
interaction of organisms with their environment. Natural selection occurs when a
environment makes a individual adapt to that certain environment by variations
that arise by mutation and genetic recombination. Also it favors certain …showed first 75 words of 928 total…
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…showed last 75 words of 928 total…time scale and determine if a certain specie
evolved from another specie. Radioactive dating is the best method for
determining the age of rocks and fossils on a scale of absolute time. All fossils
contain isotopes of elements that accumulated in the organisms when they were
alive. By determining an isotope's half-life which is the number of years it takes
for 50% of the original sample to decay, it is possible to determine the fossil's
age.
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