Problem: Given the question: - The air goes down the esophagus - The air moves into the lungs - The carbon dioxide is removed - The remaining oxygen enters the body - The remaining carbon dioxide is expelled through the mouth. What might be the first step of the process?
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The answer is:
Air is drawn in through the mouth

Problem: Given the question: - The magma cools - Particles inside the magma move closer together - Crystals are formed - The crystals contain minerals. What might be the first step of the process?
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The answer is:
Magma comes up to the surface of the earth

Problem: Given the question: - The blood travels into the neophrons - Waste is expelled via the neophrons - The waste goes to the bladder in the form of urine - The clean blood exits the kidneys. What might be the first step of the process?
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The answer is:
Blood enters the kidney