input question: What is the missing first step of the following process:  -  Cells in the pancrease release glucagon - The liver in response turns the glucagon into glucose - And releases it into the blood - The blood sugar levels are restored.???
output answer: The blood sugar drops in a body

input question: What is the missing first step of the following process:  -  May come from different sources - The gases remain trapped in the atmosphere - Through the suns light the gases hold in heat and energy - Trap them in our atmosphere - The earth may become warmer this way.???
output answer: Several types of gases form in the atmosphere

input question: What is the missing first step of the following process:  -  Coal is pulverized into fine powder - The coal is mixed with hot air - The coal and hot air are blown into a boiler - The coal and hot air burn over a fire - Highly purified water is pumped through pipes in the boiler - The water turns into steam - The steam presses against turbines - The turbines spin - Electricity is produced.???
output answer: Coal is mined out of the ground

input question: What is the missing first step of the following process:  -  The caterpillar eats constantly until it grows bigger - The caterpillar starts to form a cocoon around itself - The caterpillar becomes a pupa - After some time the cocoon hatches - And a butterfly is born.???
output answer:
A larva is born