Question: What is the missing first step of the following process: - The oxygen travels to the lungs through the windpipe - The air sacs in the lungs send the oxygen into the blood stream - The carbon dioxide in the blood stream is transferred to the air sacs - The lungs expel through the nose or mouth back into the environment.
Answer: You breathe oxygen into your body through the nose or mouth

[Q]: What is the missing first step of the following process: - The water freezes and thaws - Cracks form in the rocks - Cracks also form when rocks heat up - The rocks slowly break down.
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[A]: Water seeps into rocks

input: Please answer the following: What is the missing first step of the following process: - Release them into the air by process of sporulation - Spores are carried by the wind - Land in a hospitable growing environment - The spores germinate into the soil - The mushroom starts growing - The adult mushroom produce spores of its own to repeat the process.
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output: Adult mushrooms produce spores

Please answer this: What is the missing first step of the following process: - The fertilized egg, now a zygote, travels to the uterus - The zygote implants in the uterus - The zygote becomes an embryo - The embryo becomes a fetus - The fetus grows for approximately 9 months - The woman gives birth to a baby - The baby grows into a child - The child becomes an adult - The adult mates with another adult -
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Answer: A sperm and egg meet inside a woman's fallopian tube

Problem: What is the missing first step of the following process: - Rain falls - Water is in the area of high elevation - The water creates a stream - The stream moves towards lower elevation - The stream continues along the same path for a long time - The soil and rocks erode where the stream touches them - The stream moves deeper into the soil - The stream is smaller than the eroded area.

A: An area is at a higher elevation than the surrounding area

input: Please answer the following: What is the missing first step of the following process: - The cold water forms ice crystals - The ice crystals grow by absorbing surrounding water droplets - Form snowflakes - The snowflakes fall to the ground.
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output:
Water in the clouds becomes very cold