Q: What is the missing first step of the following process: - The brain tells blood vessels to dilate - The sweat glands become active - Moisture is released from the pores - The moisture evaporates - The evaporation causes cooling.
A: Body temperature rises

Q: 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.
A: Coal is mined out of the ground

Q: What is the missing first step of the following process: - The virus attaches to the cell's surface - The cell swallows the virus - The virus' RNA is released into the cell - The cell mistakenly reads the virus' RNA instead of its own - The cell creates new viruses - The animal cell releases the new viruses - The new viruses can infect more cells.
A: The virus finds an animal cell

Q: What is the missing first step of the following process: - The sweat changes into a gas - Heat is drawn from the sweat - This process draws heat from the body - The evaporation also cools the remaining sweat on the body.
A:
As the sweat evaporates the sweat sheds molecules into the air