Q: -  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?
A: Sunlight is absorbed by a green chemical in the leaves.

Q: -  You breathe oxygen into your body through the nose or mouth - The oxygen travels to the lungs through the windpipe - The air sacs in the lungs send the oxygen into the blood stream - The carbon dioxide in the blood stream is transferred to the air sacs  What might be the last step of the process?
A: The lungs expel through the nose or mouth back into the environment.

Q: -  An enzyme in saliva begins to break down carbohydrates - Food is squeezed down the esophagus when you swallow - Acid and enzyme in the stomach break the food down - Releases nutrients - Food then pumped into small intestine - Fluid and enzymes from liver and pancreas pumped into small intestine - Help break food into smallest molecules - Nutrients pass through wall of small intestine - Nutrients absorbed into blood stream  What might be the last step of the process?
A: Unused materials passed into large intestine to become fecal matter.

Q: -  Solar radiation reaches Earth's atmosphere - Some is reflected back into space - The rest of the energy is absorbed by land and oceans, heating the Earth - Heat radiates from Earth to space - Some of this heat is trapped by greenhouse gases in the atmosphere - Human activities such as burning fuel are increasing the amount of greenhouses gases - This causes more heat radiation to stay trapped in our atmosphere  What might be the last step of the process?
A:
The Earth's temperature rises