Чем отличается природа степей от других природных зон? Что является ее основным богатством?

I am working.
He is doing his homework now.
We are watching TV.
Tim is playing computer games.
Sasha is listening a teacher now.
Mikle is laughing now.
They are walking on te road.
Jim is sleeping at the moment.
You are talking now.
Anna is washing the dishes.