Metamorphic rocks are formed from existing rocks, when it is exposed to great heat and pressure. This process would destroy any fossils inside the already existing rock.
Earth's lithosphere<span> includes the crust and the uppermost mantle, which constitute the hard and rigid outer layer of the Earth. The </span>lithosphere<span> is subdivided into tectonic plates. ... The </span>lithosphere<span> is underlain by the </span>asthenosphere<span> which is the weaker, hotter, and deeper </span>part<span> of the upper mantle.</span>
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Answer:
Trial reproducibility
Explanation:
The reprocibility is one odf the most important part of the scientific method.
If the trial or investigation is well planned and conducted, the results could be reproduced by any investigator, researching on any place with any sample, as long as the new trial is conducted with the same parameters.
If the results are not reproducible, the investigation has a bad thecnic and is not usefull.