[Q]: - A person takes in oxygen through their nose or mouth - The oxygen travels into the body - Breaks down into glucose - Carbon dioxide is produced by the glucose breakdown What might be the last step of the process?
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[A]: The carbon dioxide is exhaled out of the body through the nose or mouth.

[Q]: - A sperm and egg meet inside a woman's fallopian tube - The fertilized egg, now a zygote, travels to the uterus - The zygote implants in the uterus - The zygote becomes an embryo - The embryo becomes a fetus - The fetus grows for approximately 9 months - The woman gives birth to a baby - The baby grows into a child - The child becomes an adult What might be the last step of the process?
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[A]: The adult mates with another adult

[Q]: - Coal is burned - Sulfur in the coal combines with oxygen to form sulfur oxides - The sulfur oxides are released into the atmosphere - The sulfides combine with oxygen in the atmosphere to form sulfur trioxide - The sulfur trioxide reacts with water in the atmosphere to form sulfuric acid, a very strong acid What might be the last step of the process?
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[A]: The sulfuric acid makes the rain acidic

[Q]: - Magma rises through cracks in the Earth's crust - The pressure causes plates to move - Magma explodes to the surface - The lava from the eruption cools to form new crust What might be the last step of the process?
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[A]:
After several eruptions, the rock builds up and a volcano forms