What percentage of the earth is covered by green stuff?

Answer 1

I'm guessing you mean the green stuff you see on the pictures of the whole earth and it's just green and blue- seeing as the blue stuff covers 70% of our earth, I'd say green is 30%. :P

Answer 2

Roughly 71% of the Earth's surface is covered by water, while land makes up the remaining 29%. Of the land area, approximately 31% is covered by forests and vegetation, so in total about 9% of the Earth's surface is covered by "green stuff."