Photosynthesis by Plants Gives us the Oxygen we Breathe.

http://en.wikipedia.org/wiki/Cellular_respiration
http://en.wikipedia.org/wiki/Photosynthesis

Aerobic respiration

C₆H₁₂O₆ (s) + 6 O₂ (g) → 6 CO₂ (g) + 6 H₂O (l) + heatΔG

Photosynthesis.

The overall balanced equation is...

6CO₂ + 6H₂O ------> C₆H₁₂O₆ + 6O₂

_{Photosynthesis by plants gives us oxygen. This is how we Human Beings get oxygen to breathe. Cutting of trees will lead to the extinction of all animal life on earth.}

Photosynthesis and Aerobic Respiration are exactly opposite to each other. The End product of photosynthesis is oxygen and glucose.Animals including Human beings need this glucose and oxygen for the continuation of life.

Plants provide us with food and oxygen to breathe.Early morning walks are good for health as plants release oxygen into the atmosphere which we breathe.

The products in the equation of photosynthesis are the reactants in the equation of Cellular Aerobic respiration. Exactly opposite to each other.