answersLogoWhite

0


Best Answer

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.

User Avatar

Wiki User

12y ago
This answer is:
User Avatar
More answers
User Avatar

Wiki User

7y ago

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

This answer is:
User Avatar

User Avatar

Wiki User

13y ago

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.

This answer is:
User Avatar

User Avatar

Wiki User

8y ago

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

This answer is:
User Avatar

User Avatar

Wiki User

13y ago

Almost all

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: How much of oxygen is produced by photosynthesis?
Write your answer...
Submit
Still have questions?
magnify glass
imp