[Q]: What is the missing first step of the following process: - The recyclable materials go to a recycling center - The recycling center further separates the materials - Large equipment compacts the materials into bales - The recyclable materials are shipped to other recycling centers - The other recycling centers further process the materials that center specializes in - The materials are purchased by manufacturers - The manufacturers process the recycled materials the same way they would use new materials - The recycled materials are incorporated into new products.
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[A]: People separate different materials to be recycled

[Q]: What is the missing first step of the following process: - Placed into the dishwasher - A detergent is added to the detergent dispenser - The dishwasher is closed - The power is turned on - In about 1.5-2 hours, the dishes are clean -
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[A]: Dirty dishes are rinsed

[Q]: What is the missing first step of the following process: - The magma cools - Crystals form and the magma become igneous rocks - The igneous rocks break down into sediment - Become sedimentary rocks - If subjected to heat and/or pressure from plate-tectonic activity the sedimentary rocks become metamorphic rock - The metamorphic rocks melt - Become magma again.
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[A]: Rock begins as magma from a volcano

[Q]: What is the missing first step of the following process: - The egg hatches into a baby bird - Baby bird eats - Grows into an adult bird - The bird finds a mate - The pair build a nest - The birds lay eggs.
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[A]:
A bird lays an egg