Do u know from where oxygen (O2) comes ?
2006-06-08 08:19:54 · 7 answers · asked by amitgaik2 1 in Education & Reference ➔ Special Education
Yes, during photosynthesis, plants and trees take in carbon dioxide and release oxygen into the atmosphere. For this reason, planting trees is encouraged !
2006-06-08 08:22:43 · answer #1 · answered by young_friend 5 · 0⤊ 0⤋
It comes from Plants and Algae. During Photosynthesis they use water. They break it down and take the Hydrogen from H20. Then, they do not need the oxygen and let it out into the air. Algae do that too.
2006-06-08 08:22:59 · answer #2 · answered by fortunamajor 4 · 0⤊ 0⤋
Plants
2006-06-08 08:22:46 · answer #3 · answered by Princess 5 · 0⤊ 0⤋
Chloraphyll in plants. Carbon dioxide cycle.
2006-06-08 13:26:45 · answer #4 · answered by the Politics of Pikachu 7 · 0⤊ 0⤋
trees & plants make it - they take in carbon dioxide & give off oxygen. lovely process, really, & so simple - save the trees!!!
2006-06-08 08:23:04 · answer #5 · answered by pumpkin 6 · 0⤊ 0⤋
plants...they taken co2 and release o2
2006-06-08 08:22:49 · answer #6 · answered by Bear Naked 6 · 0⤊ 0⤋
simply it comes from solar reaction in plants leafs ,and from volcanoes.(the volcano information is not sure)
2006-06-08 08:31:55 · answer #7 · answered by zigzagaha 1 · 0⤊ 0⤋