Yon can find it everywhere．Yon can touch it or feel it.But it can’t be eaten and can’t be drunk．There is air in it．There is water in it．Because it has much nutrition(营养物)which plants live on it,and we Yon can find it everywhere. Yon can touch it or feel it.But it can’t be eaten and can’t be drunk. There is air in it. There is water in it. Because it has much nutrition (which plants live on it,and we