[You mixed up your stats.](https://www.bossod.com/benefits-of-turf/)

&gt;A turf area 50' x 50' produces enough oxygen to meet the everyday needs of a family of four and each acre of grass produces enough oxygen for 64 people a day.

A lawn only provides oxygen for four. An ACRE of lawn provided oxygen for 64.

[A lawn of trees](https://www.thoughtco.com/how-much-oxygen-does-one-tree-produce-606785), however, would produce much, much more oxygen. I'll grant you though, a lawn of trees wouldn't work as well for water drainoff, you'd end up living in a marshland.

But, hey, free frogs!