- Coal is put in a coal-fired steam station - Water is put in pipes in the coal-fired steam station - The coal is crushed - The coal is moved into a boiler along with hot air - The water is moving through pipes in the boiler - The steam from the water is blown against a turning mechanism - The force of the steam makes the mechanism turn What might be the last step of the process?
Ans: The mechanism generates electricity.

- You eat food - Your stomach digests the food - Sugars from food enter your bloodstream - Insulin helps turn sugars into energy What might be the last step of the process?
Ans: Insulin helps your body store the energy in fat, muscle and liver cells

- Carbon dioxide from the air passes through small pores (holes) in the leaves - These pores are called stomata - Water is absorbed by the roots - It passes through vessels in the stem on its way to the leaves What might be the last step of the process?
Ans: Sunlight is absorbed by a green chemical in the leaves.

- You breathe in - Air goes through all the little branches in your lungs to fill up the air sacs, or alveoli - Oxygen goes through the walls of the alveoli and into the capillaries - The oxygen goes into the bloodstream - Oxygen is left and carbon dioxide is picked up What might be the last step of the process?
Ans: You breathe it out through your lungs