Q: What is the missing first step of the following process: - Two types of proteins exist in filaments in the muscles - The filaments move when the brain instructs them to - The motion of the filaments cause the muscle to shorten and contract - Opposing pairs of muscles exist in order to provide the necessary range of motion.
A: Electrical signals in the brain travel through nerves to muscles

Question: What is the missing first step of the following process: - That bacteria begins to grow and reproduce inside the cells - The dividing bacteria begin to make toxins - Those toxins damage your cells - Disease symptoms may begin.
Answer: Someone is infected with bacteria

[Q]: What is the missing first step of the following process: - The animal finds or builds a suitable place to hibernate where they can stay warm and protected - The animal moves into their den - Their heart rate and breathing slow down to conserve energy - They emerge from the den when the weather is warming up again.
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[A]: An animal eats a lot of food to fatten up

input: Please answer the following: 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.
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output: Chemicals like sulfur dioxide and nitrogen are released into the air

Please answer this: What is the missing first step of the following process: - You fill the tray with warm water - You carefully place the tray on an even surface in a freezer that is at least 32 degree Farhenheit, the freezing point of water - The water begins to get colder until it starts to freeze solid - The water expands as it freezes, one of the few liquids that has greater volume as a solid - Because you used warm water, the gasses in the water had evaporated out, so you will have nice clear ice cubes without cracks from the trapped gasses -
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Answer: You find an empty ice cube tray

Question: 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.
Answer:
Boil salt water