I believe the are recently new within the last 50 years i would imagine
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If the rock was found near a lava zone, it was igneous.
If he found it deep down where a lot of pressure is, it is metamorphic.
If he found it in riverbeds or where sand is, it is sedimentary.
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An oncogene is a gene that has the potential to cause cancer. In tumor cells, these genes are often mutated, or expressed at high levels. Most normal cells will undergo programmed form of rapid cell death when critical functions are altered and malfunctioning
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population i think, I am not certain but it seems more likely, if its not population then it is biome
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the different eras in the geologic time are the Paleozoic Era, the Mesozoic Era, and the Cenozoic Era.
