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Author Question: Because we know that the half-lives of many radioactive isotopes are millions of years, we can deduce that (Read 64 times)

jenna1

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on: Aug 10, 2020
Because we know that the half-lives of many radioactive isotopes are millions of years, we can deduce that

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the longer it exists the more radioactive nuclei Earth produces.

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the sun is the source of all the radioactive nuclei on Earth.

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there must have been many more radioactive nuclei on Earth when life began.

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there must have been far fewer radioactive nuclei on Earth before life began.

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the natural radioactivity of minerals on the Earth was created by the Earth's internal temperature.
Physics for Scientists and Engineers ¦ Serway, Jewett ¦ 9th Edition
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Marked as best answer by jenna1 on Aug 10, 2020

ciecieme

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Reply #1 on: Aug 10, 2020
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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jenna1

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Reply 2 on: Aug 10, 2020
:D TYSM

smrtceo

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Reply 3 on: Yesterday
Gracias!

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