[Q]: What is the missing first step of the following process: - The lungs expand - Air is pulled from outside the body, into the lungs - The membranes in the lungs collect oxygen molecules - Oxygen is transferred to red blood cells - Red blood cells distribute oxygen throughout the body -
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[A]: The diaphragm contracts

input: Please answer the following: What is the missing first step of the following process: - The dishwasher heats the water - The detergent dispenser opens at the right time - Water is shot through the jets to clean the dishes - The dirty water is drained - More water is sprayed to rinse the dishes - The water is drained again - The air is heated in the dishwasher to dry the dishes.
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output: Water flows into the dishwasher

Please answer this: What is the missing first step of the following process: - Your town or a private company collect and transport the aluminum to a recycling facility - The aluminum is sorted and cleaned at the central recycling facility - The aluminum is melted down to remove coatings and inks - The melted aluminum is formed into large formations called ingots - The ingots are transported to another facility and rolled out to make them easier to manipulate - The ingots can now be turned into new aluminum products.
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Answer: You place aluminum cans and other products into recycling bins

Problem: What is the missing first step of the following process: - The sediments become glued together - The glued together parts become hard like cement - The sediment becomes a big rock - The rocks erode slowly - The rocks come apart - The rocks become smaller rocks - The rocks continue to erode into smaller rocks - The process starts again.

A: Minerals fill spaces between bits of sediment

Problem: Given the question: What is the missing first step of the following process: - Composition of blood is regulated - Volume of water in blood is kept constant - PH is kept at a constant level - Kidneys help regulate blood pressure - Kidneys stimulate the making of red blood cells - Calcium levels are maintained.
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The answer is:
Kidneys filter waste out of blood

Problem: What is the missing first step of the following process: - The water combines with carbon dioxide in the air to form carbonic acid - As the acid is formed, the iron starts to dissolve - Some of the water breaks down into hydrogen and oxygen - The free oxygen and dissolved iron bond together - They form iron oxide, which is rust -

A:
Water comes into contact with something made of iron