About 20%
It is 35%.
Air is approximately 20% Oxygen.
0.01 percent of the worlds oxygen is from the amazon
76%
Current thinking places it at between 50 to 85 percent, depending on time of year and the state of phytoplankton bloom.
the answer is not nearly as much as people would imagine. the truth is the majority of the planets plant based oxygen production/carbon neutralization comes from ocean based blooms. Forest as such produce around 25% on average but you should also consider that the Taiga forest for example (that nobody ever talks about) absorbs more carbon and produces more oxygen than all the other temperate and tropical forests on the planet combined. This probably doesn't sit too well with Amazon conservationists but they should realize and focus on the real ecological damage done by deforestation there - which certainly ISN'T large scale oxygen depletion.
About 60% of our oxygen is produced by phytoplakton.
its about 90% of the worlds rice
Pine trees produce approximately 260 pounds of oxygen per year.
35 percent
its about 90% of the worlds rice
Phytoplankton is what gives us as humans oxygen. Without it, we can`t live.