What is the missing first step of the following process:  -  They are buried under layers of soil - Pressure builds over time - The remains liquefy - The carbon atoms rearrange to become a new substance.
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Answer: Plants and animals long ago died


What is the missing first step of the following process:  -  The air enters the mouth and nose - The diaphragm contracts - Air fills all the sacks in the lungs - Oxygen passes through the sacks into capillaries - The blood is passed to the blood in the capillaries - The blood carries the oxygen to the heart - The heart pumps the oxygenated blood to the body.
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Answer: You inhale


What is the missing first step of the following process:  -  The magma cools - Particles inside the magma move closer together - Crystals are formed - The crystals contain minerals.
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Answer:
Magma comes up to the surface of the earth