interact verb [I]. âº to âcommunicate with or âreact to each other: He does not interact well with the other âstudents. interaction noun [C/U] us /ËÉªnÂ·tÉrËaekÂ·tÉrËÃ¦k/ âº [ÊÉn] âc drug. interactions [Noun/C] u /usÂ·ËÉªnÂ·tÉrËaek/. tÉrËÃ¦k ÊÉn
Scientists estimate a safe oxygen consumption of 50 liters per hour for a human. Meanwhile, a leaf gives off about five milliliters of oxygen per hour. A person would need to be in a room with about ten thousand leaves. About 300 to 500 plants would produce the right amount of oxygen.
A 100-ft tree, 18 diameter at its base, produces 6,000 pounds of oxygen. - Northwest Territories Forest Management On average, one tree produces nearly 260 pounds of oxygen each year. Two mature trees can provide enough oxygen for a family of four. - Environment Canada, Canada's national environmental agency