[Q]: - Coal is pulverized into fine powder - The coal is mixed with hot air - The coal and hot air are blown into a boiler - The coal and hot air burn over a fire - Highly purified water is pumped through pipes in the boiler - The water turns into steam - The steam presses against turbines - The turbines spin - Electricity is produced. What might be the first step of the process?
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[A]: Coal is mined out of the ground

[Q]: - These pores are called stomata - Water is absorbed by the roots and passes through vessels in the stem on its way to the leaves - Chlorophyll absorbs the sun's energy - It is this energy that is used to split water molecules into hydrogen and oxygen - Oxygen is released from the leaves into the atmosphere - Hydrogen and carbon dioxide are used to form glucose or food for plants. What might be the first step of the process?
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[A]: Carbon dioxide from the air passes through small pores (holes) in the leaves

[Q]: - Bread absorbs water from the air - Bread absorbs warmth from the air - Dust particles with mold spores fall on bread - Mold spores start to consume the bread for energy - Mold colonies grow until they are visible. What might be the first step of the process?
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[A]: Bread is exposed to the elements

[Q]: - The egg hatches - A larva emerges - The larva eats and grows - The larva sheds its skin - The larva enters a chrysalis - The pupa grows inside the chrysalis - The adult butterfly exits the chrysalis - The adult butterfly is now fully grown - The adult butterfly lays more eggs. What might be the first step of the process?
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[A]:
A butterfly starts as an egg