At present, the world has changed. People began to have density. There is more housing. There are many air cargo transport, and a season on Earth has never been changed from pure air has a clear season.
Current world has changed a lot People began to be more crowded. With more housing. The hairs of Transportation The weather and the seasons on Earth change from season to have fresh air is clear. But now, everything began to change.
At present, the world has changed. People began to have dense. Housing is more, communication is very hairy. The weather and season on the world to change from ever gotten pure the season clear.