0.01 percent of the worlds oxygen is from the amazon
20% of the world's oxygen comes from the amazon rainforest.
The amazon produces 20 % of the world's oxygen. But deforestation is bringing that percentage down drastically.
About 60% of our oxygen is produced by phytoplakton.
35 percent
About 20%
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.
The percentage of oxygen in water, vapors or ice is the same.
depends on how big the tree is the bigger the more oxygen it produces.
There are very few plants in the Atacama so it produces next to no oxygen.
Deconstruction of the rainforest means that there will be less oxygen that the trees produce. And it takes awy animals habitats away.
Yes, plants produce oxygen and need carbon dioxide and sunlight to produce food.