How much of oxygen is produced by photosynthesis?

Answer 1

A full size Douglas fur tree will produce about 260 pounds of oxygen in a year. An oak tree will produce simmilar ammounts, as will most other large trees. Smaller bushes may produce around 20-40 pounds as will grass lawns.

Answer 2

Yes, plants 'breathe in' carbon dioxide and 'breathe out' oxygen just like us except we do the opposite.

Water is broken down to get electrons. This release oxygen gas and protons. Process is known as photolysis

Answer 3

Around 30 percent of oxygen is made from photosynthetic reactions of plants, the majority of those being in the amazon Rainforest in Brazil. The other 70 percent, roughly, comes from Planketon and other Photosynthetic Organisms.

Answer 4

Approximately 50-85% of Earth's oxygen is produced through photosynthesis by plants, algae, and cyanobacteria. The exact amount may vary depending on factors such as location, climate, and specific ecosystem.

Answer 5

Virtually all of the oxygen in the atmosphere was produced by photosynthesis.

Answer 6

Almost all