Carbon-14 has a half-life of approximately 5,730 years. how many half-lives have occurred in a sample that contains less than 10 percent of the original amount of the parent isotope?

4 Half-lifes

Explanation:

1 half-life : 50%

2 half-life : 25%

3 half-life : 12.5%

4 half-life : 6.25%

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explanation:

phaneritic textures in which phaner means visible so phaneritic textures are standard of impertinent volcanic rocks. these rocks crystallized gradually under the surface of earth. when the magma cools deliberately then the ores have chance to develop and produce long crystals.