a global scale<>,<>plants$$$a global scale<>, plants and<>other photosynthetic organisms$$$plants<>and<>other photosynthetic organisms$$$plants<>and other photosynthetic organisms have generated<>all$$$other photosynthetic organisms<>have generated<>all$$$other photosynthetic organisms<>have generated all of<>the oxygen$$$other photosynthetic organisms<>have generated all of the oxygen in<>the air$$$all<>of<>the oxygen$$$all<>of the oxygen in<>the air$$$the oxygen<>in<>the air
Plants extract several of these elements, such as oxygen, carbon, and hydrogen, from water and air.
On a global scale, plants and other photosynthetic organisms have generated all of the oxygen in the air.
On a global scale, plants and other photosynthetic organisms have generated all of what element in the air?