input: Please answer the following: What is the missing first step of the following process: - The pressure causes plates to move - Magma explodes to the surface - The lava from the eruption cools to form new crust - After several eruptions, the rock builds up and a volcano forms -
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output: Magma rises through cracks in the Earth's crust

Please answer this: What is the missing first step of the following process: - Mix in milk, eggs, and melted butter - Mix until smooth - Heat a griddle or frying pan to medium high - Pour batter onto the griddle -
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Answer: Mix flour, baking powder, sugar, and salt into a bowl

Problem: What is the missing first step of the following process: - The sound travels in waves, as sound does - The sound 'bounces' off of a nearby object - The sound wave returns to the bat - The bat hears the echoed sound - Folds in the bat's ear and adaptations in the bat's brain enable it to determine the size, shape, and position of the other object via the properties of the returned sound waves - Other animals use echolocation in generally similar ways -

A: Bats and other animals produce a high-pitched tone

Problem: Given the question: What is the missing first step of the following process: - Blood is carried to the kidneys through the renal arteries - The kidneys contain filters inside - The filters capture the waste products - The waste is combined with water to make urine - The urine leaves the kidney and is collected in the bladder - The cleaned blood is returned to the body.
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The answer is:
Waste products are deposited in the blood

input question: What is the missing first step of the following process: - The roots absorb water and minerals from the soil - This combination of water and minerals flows from the stem into the leaf - Carbon dioxide enters the leaf - Light, water and minerals, and the carbon dioxide all mix together - This mixture forms sugar (glucose) which is what the plant eats - Oxygen goes out of the leaf through the stomata -???
output answer: Chloroplasts in the leaf of the plant traps light from the sun

input question: 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.???
output answer:
Minerals fill spaces between bits of sediment