Q: -  A machine called a pulverizer grinds the coal into a fine powder - The coal powder mixes with hot air, which helps the coal burn more efficiently, and the mixture moves to the furnace - The burning coal heats water in a boiler, creating steam - Steam released from the boiler powers an engine called a turbine, transforming heat energy from burning coal into mechanical energy that spins the turbine engine - The spinning turbine is used to power a generator, a machine that turns mechanical energy into electric energy - This happens when magnets inside a copper coil in the generator spin - A condenser cools the steam moving through the turbine - As the steam is condensed, it turns back into water  What might be the last step of the process?
A: The water returns to the boiler, and the cycle begins again

Q: -  Bread is exposed to the elements - 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  What might be the last step of the process?
A: Mold colonies grow until they are visible.

Q: -  A butterfly lays an egg - A larvae matures inside of the egg - The caterpillar hatches from the egg - The caterpillar eats and grows - The caterpillar spins a coccoon around itself and forms into a pupa - The butterfly forms inside of the coccoon - The mature butterfly emerges from the coccoon - The butterfly mates  What might be the last step of the process?
A: The female butterfly lays eggs.

Q: -  A person eats food - The person's blood sugar level rises - The pancreas receives a signal to release insulin - Insulin is released into the bloodstream - Insulin signals cells to absorb sugar - The cells absorb sugar from the bloodstream  What might be the last step of the process?
A:
The cells use the sugar as energy.