Why does the oxygen level in the air doesn’t change dramatically, when most of the trees shed their leaves in the winter?

Question

Why does the oxygen level in the air doesn’t change dramatically, when most of the trees shed their leaves in the winter?

In: Earth Science

Answer 1

The total mass of Earth’s atmosphere – one fifth of which is oxygen – is approximately 5×10^18 kg, or roughly a thousand times the Earth’s total living biomass (most of which *isn’t* trees).

Also, a bunch of those trees are in the southern hemisphere, where it’s currently summer.

Long story short, there’s a lot more air than there’s trees.