Problem: Given the question: What is the missing first step of the following process: - Babies become infants - Infants become children - Children learn skills - Children become teenagers - Teenagers undergo puberty - Teenagers become adults - Adults have children - Adults become elderly - Elderly humans die.
++++++++++++++++++++++++++++++++
The answer is:
Humans are born as babies

Problem: Given the question: What is the missing first step of the following process: - The isotope is unstable - The isotope emits radiation - The isotope decays - The isotope loses some atomic particles - The isotope turns into a different element - The isotope is finished decaying and emitting radiation.
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The answer is:
An isotope has too many protons

Problem: Given the question: What is the missing first step of the following process: - Water seeps into the remains - Minerals dissolved in the water form crystals - Crystalized minerals cause the remains to harden - The minerals form a fossil.
++++++++++++++++++++++++++++++++
The answer is:
An organism dies