Q: What is the missing first step of the following process: - Water droplets are in clouds - The air gets cold - Water droplets turn into ice crystals - Ice crystals in clouds stick together and become snowflakes.
A: Water evaporates from the ground up to the sky

Q: What is the missing first step of the following process: - The passenger arrives early at the airport - The luggage is checked - The passenger waits in line - The passenger shows their identification and gets a boarding pass - The passenger goes to their gate - The passenger gets in line when it's time to board - The person boards the plane - The plane arrives at the destination - The passenger gets off the plane at their destination.
A: An airline reservation is made

Q: What is the missing first step of the following process: - The energy causes the fault lines give way - The earth's plates move - The energy radiates outward from the fault in all directions - The seismic waves shake the earth as they move through it.
A: Energy builds up in the crust of the earth

Q: What is the missing first step of the following process: - The stomach churns the food - With the aid of stomach acids - The food becomes a thick liquid - Is then passed to the small intestine.
A:
Food leaves the esophagus and enters the stomach