The plants are living beings that gives oxygen to the environment. Plants, a chemical process called Photosynthesis, which is basically the production of oxygen sugar from of CO2 (carbon dioxide minerals and H20 (water) with help of sunlight.
CO2 + H20 + sunlight = (CH2O) + O2
Carbon dioxide water carbohydrates oxygen
What is the result of this process?
Oxygen is one of the by-products that come from the decomposition of water. The oxygen formed from the reaction between CO2 and H2O, is expulsed from the plant through stomata of the leaves for photosynthesis to occur, the energy used from the sunlight is necessary that was absorbed by the plants.