Compared with Air Purifier, our world, indeed. But at present, there are a number of destroyed forests and considerably. Therefore, if we all help each other just like planting increases Air Purifier, our world.
Like air to the world of the real. But the forest is destroyed and the population has decreased dramatically. If we all help plant trees. It's like an air purifier to improve our world.
As the air purifier to our world by genuine. But the current forest was destroyed and reduced greatly. So if we all work together to plant trees. Like the boost air purifier to our world.