70% of the oxygen on Earth comes from algae in the sea, not forests - which notably, also aren't really "carbon sinks" either since trees breath O2 and emit CO2

70% of the oxygen on Earth comes from algae in the sea, not forests - which notably, also aren't really "carbon sinks" either since trees breath O2 and emit CO2 as well sometimes. But it's also weird to say that you'd need more forest then that, as though it's mutually exclusive. Our suburbs can be extremely green filled, as can our cities, but probably more notably is the simply wrong element of it: the Earth is at no risk of running out of oxygen due to "too many human beings". PS: Of note [1] it's not a super reliable source, but this eyeballs that you'd probably need about 10,000 leaves or 700 house plants[2] (keeping in mind a houseplant is very small, so a large tree probably does substantially better). [1] https://gizmodo.com/how-many-plants-would-you-need-to-generate-oxygen-for-y-5955071 https://gizmodo.com/how-many-plants-would-you-need-to-genera... [2] https://medium.com/@candidegardening/how-many-plants-would-it-take-to-produce-enough-oxygen-for-one-person-7312743ed70b https://medium.com/@candidegardening/how-many-plants-would-i...