Absolutely wrong, rainforest doesnt produce oxygen at all, it has an OXYGENE TURNOVER, as O2 is released AND absorbed, overall it has almost no impact on the amount of O2 in the world, the only way more O2 is produced than it is consumed is by "Locking" carbon in plants, in other words, the only way for the rainforest to produce O2 is by growing, if it doesnt GROW, it doesnt produce any O2, and if it shrinks, it is releasing CO2.
All the Rainforests in the world combined accounts for it making 28% of the World's oxygen, and not only that, Rainforests are the World's biggest Pharmacy - with most of its plants being natural medicine.
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.
Actually, rainforests (or any other type of forest) are not a source of net oxygen production. As vegetation grows it creates oxygen from CO2. The carbon is used to build the plant and the oxygen is released, but, when a plant dies the opposite happens. As it decomposes it produces CO2 and absorbs oxygen as the carbon in the plant recombines with the oxygen. In a mature forest, as rainforests are, the growth and decay are in balance and the net production of oxygen is zero. As a forest grows carbon accumulates in its plant material, but, as deforestation occurs there is a net loss of plant material and CO2 is released. The myth that rainforests produce "28% of the world's oxygen" simply is not true.
The pacific ocean. Green algae in the oceans produce the majority of the Earth's oxygen. The rainforests add a much smaller amount.
a lot of oxygen! that's where most of it comes from!
about 3% of th entire world
Nearly 50% of the world's plant and animal species can be found in rainforests. Rainforests are considered to be the best habitat for animals and plants.
If you were to destroy all the rainforests, it will definitely affect the lives of all living creatures including humans. There will be much lesser trees and plants for photosynthesis which releases oxygen. There will be lesser animals too. This would mean less food chain supply for humans and less oxygen for breathing. There is also the effect to the world's ozone layer.
Around 3-6% of the world is taken up by the rainforests, all of them around the equator. But, amazingly, rainforests hold half the population of all the animals in the world!
1. How much of our rainforests have been depleted throughout history?
Much less oxygen, the rain forests play a huge role on the climate. I think that is a hard question to answer though cause alot of hypothesis can be made but none really proved unless it happens
If you want an answer you should use correct grammar. By the sounds of it you are a very common CHAV. If you mean: How much of the world is covered by rainforest, the answer is 6% If you mean: How many rainforests are there in the world, the answer is around 24