Please answer this: What is the missing first step of the following process: - The plants and floor absorb the the sunlight - The absorbed sunlight is converted to heat - The heat cannot escape the glass - The heat is trapped in the greenhouse - The hot air rises - The colder air at the top is pushed to the bottom - The colder air is then warmed by the floor and the plants.
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Answer: Sunlight passes through the glass into the greenhouse

Problem: What is the missing first step of the following process: - You must draw up a plan to what kind of orbit the satellite will travel - You make preparations for the rocket that will travel into space - Prepare the crew that will send it there - You begin the countdown date for the rocket - And then you send the rocket carrying the satellite into space - Once in orbit the satellite will be placed where it was planned.

A: You must decide the purpose of the satellite

Problem: Given the question: What is the missing first step of the following process: - They process it with millions of tiny nephrons - Remove all the waste - The kidneys return the blood back to the body through the renal artery - Send the urine with the waste to the bladder through the ureters.
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The answer is:
The kidneys receive blood from the renal artery

input question: What is the missing first step of the following process: - The virus has receptors that lock onto a target cell - The virus enters the cell - The virus uses the cell like a factory to make new copies of the virus - The new copies of the virus leave the cell - Infect other cells - The host gets sick as its cells are damaged.???
output answer: A virus enters a host body

What is the missing first step of the following process: - The egg hatches to form a larva, also called a caterpillar - The carterpillar molts (loses its skin) many times as it grows - The caterpillar then forms itself into a pupa, or chrysalis - The caterpillar in the chrysalis begins change, a process called mmetaphorphosis - The caterpillar completes its metamorphosis and has turned into a butterfly - The adult butterfly emerges out of the chrysalis and flys away! -
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Answer: The butterfly starts as an egg

Q: What is the missing first step of the following process: - The water will turn into water vapor - Collect the water vapor - Allow the water vapor to cool - The water vapor will turn into liquid water - The salt will be separated from the water.
A:
Boil salt water