Question

define oxygen.................?​

Answer 1

Answer:

a colourless, odourless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air.

"if breathing stops, there is no oxygen getting to the brain and the cells begin to die"

Answer 2

Answer:

a colorless, odorless, gaseous element constituting about one-fifth of the volume of the atmosphere and present in a combined state in nature. It is the supporter of combustion in air and was the standard of atomic, combining, and molecular weights until 1961, when carbon 12 became the new standard