How much of earth's oxygen comes from rainforest?

Answer 1

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.

Answer 2

yes

Plants give off Qxygen during the process of photosynthesis. They take up the CO2 from the atmosphere and the water reduces it to Glucose. In the entire conversion of carbon dioxide to glucose, oxygen is released from the plants into the atmosphere.

oxygen does not only come from plants though a lot of it comes from the ocean too.

Answer 3

actually, the phytoplankton in the ocean provide us with over fifty percent of the earth's oxygen supply. I'm not sure what the answer to your question is, but i can assure you that it's not seventy percent as the previous respondent stated.

Answer 4

The amount of oxygen supplied by rainforests is about 40% of the earths oxygen.

Answer 5

Marine plants produce between 70 and 80 percent of the oxygen in the atmosphere. Grasses and other other green plants another 10% Trees produce the balance.

Answer 6

Around 20% of our oxygen comes from these diminishing forests.

Answer 7

plants produce 30% of the oxygen on earth.

Answer 8

2%