[ELI5] TIL that algae produced about 60% of our planet’s oxygen. Is it possible then to have all of the trees gone and we would still be fine oxygen-wise?

Question

[ELI5] TIL that algae produced about 60% of our planet’s oxygen. Is it possible then to have all of the trees gone and we would still be fine oxygen-wise?

In: Earth Science

Answer 1

What about algae-bloom that people been talking? Is it actually a good thing now?