Problem: What is the missing first step of the following process:  -  The oxygen travels into the body - Breaks down into glucose - Carbon dioxide is produced by the glucose breakdown - The carbon dioxide is exhaled out of the body through the nose or mouth.

A: A person takes in oxygen through their nose or mouth

Problem: Given the question: What is the missing first step of the following process:  -  A selection of grapes are gathered - The grapes are washed - The stems are removed from the grapes - The grapes are crushed and added to a fermation container - Yeast is added to the container - The yeast eats the sugar in the yeast, releasing alcohol -
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The answer is:
Grapes are grown

input question: What is the missing first step of the following process:  -  These substances rise into the high atmosphere - They react with water and oxygen - This creates a more acidic rain - The rain with the high acid content falls.???
output answer: Chemicals like sulfur dioxide and nitrogen are released into the air

What is the missing first step of the following process:  -  A larvae matures inside of the egg - The caterpillar hatches from the egg - The caterpillar eats and grows - The caterpillar spins a coccoon around itself and forms into a pupa - The butterfly forms inside of the coccoon - The mature butterfly emerges from the coccoon - The butterfly mates - The female butterfly lays eggs.
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Answer: A butterfly lays an egg

Q: What is the missing first step of the following process:  -  Some is reflected back into space - The rest of the energy is absorbed by land and oceans, heating the Earth - Heat radiates from Earth to space - Some of this heat is trapped by greenhouse gases in the atmosphere - Human activities such as burning fuel are increasing the amount of greenhouses gases - This causes more heat radiation to stay trapped in our atmosphere - The Earth's temperature rises -
A: Solar radiation reaches Earth's atmosphere

[Q]: 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.
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[A]:
Several types of gases form in the atmosphere