Problem: - 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?

A: You breathe it out through your lungs

Problem: - Carbon dioxide passes through stomata in the leaves - Water is absorbed through roots - Chloroplast cells in leaves contain chlorophyll - Chlorophyll absorbs energy from sunlight - Energy splits water molecules into hydrogen and oxygen - Oxygen gets released into atmosphere - Hydrogen and carbon dioxide used to create glucose What might be the last step of the process?

A: Glucose is food for plants.

Problem: - Energy builds up in the crust of the earth - The energy causes the fault lines give way - The earth's plates move - The energy radiates outward from the fault in all directions What might be the last step of the process?

A: The seismic waves shake the earth as they move through it.

Problem: - 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?

A:
Insulin helps your body store the energy in fat, muscle and liver cells