Problem: Given the question: - The sediments become glued together - The glued together parts become hard like cement - The sediment becomes a big rock - The rocks erode slowly - The rocks come apart - The rocks become smaller rocks - The rocks continue to erode into smaller rocks - The process starts again. What might be the first step of the process?
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The answer is:
Minerals fill spaces between bits of sediment

Problem: Given the question: - The oxygen passes through the bronchial tubes to the lungs - The oxygen is moved into the bloodstream - Circulates through the body - The cells in the body exchange the oxygen with carbon dioxide - The bloodstream carries the carbon dioxide back to the lungs - The lungs expel the carbon dioxide through the nose and mouth. What might be the first step of the process?
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The answer is:
A person breathes in oxygen

Problem: Given the question: - 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. What might be the first step of the process?
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The answer is:
An isotope has too many protons