• Question: What does the tree got to make us breath?

    Asked by to Amar, Matt on 21 Mar 2014. This question was also asked by .
    • Photo: Amar Joshi

      Amar Joshi answered on 21 Mar 2014:

      During the day, trees use the sunlight to make sugar from carbon dioxide in the air and water, a process called photosynthesis (pronounced foto-sin-thee-sis). The plant can then use this sugar to create energy.

      During photosynthesis the creates oxygen as well as sugar. This oxygen is released back into the atmosphere which we, and other animals, can breath.

    • Photo: Matthew Lam

      Matthew Lam answered on 21 Mar 2014:

      Humans are connected to trees (and any green plant) by the air we share on Earth.

      Human cells need to produce energy to survive by a process called ‘respiration’, where oxygen and sugar are converted into energy and carbon dioxide. We get the oxygen from the air by breathing in and the levels of oxygen don’t run out because trees and plants keep replenishing the oxygen.

      They do this because they produce their own sugar for energy during the day by a process called photosynthesis. They use sunlight to convert carbon dioxide into sugar and oxygen which is released into the air. At night, the tress and plants use the sugar to do respiration, just like humans, and produce energy to grow and survive.

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