Julius Ascutia Gardiola
Sunlight and Water.
Joseph Priestley discovered oxygen in 1774.
because oxygen has been around for as long as there was sea life and when the first one came out of the sea they technically discovered oxygen
Julius Ascutia Gardiola
All living beings need oxygen for respiration is essential for combustion . Oxygen dissolved in water supports aquatic life.
Julius Ascutia Gardiola
sooty flame refers to the flame produces after burning, which shows incomplete combustion, i.e, insufficient supply of oxygen.
Before there was oxygen life tended to exist in water as a form of algae which breathed in carbon dioxide and exhaled oxygen like plants. bacteria also existed at underwater thermal vents like the ones they have discovered at the ocean floor.
Life on Earth, or at least most of it, would not exist without free oxygen. It is possible that some other form of life, based on another element, could exist in a non-oxygen environment. But none has been discovered as of now.
Oxygen was important in the early stage of chemistry's development because of the fundamental roles of air (including oxygen) in the life of a human and the process of combustion. The earliest elements defined included air, along with earth, water, and fire.
Without combustion,we can't cook food.