Element of air There are four of the atmos plered the earth chief components.
Carbon dioxide increases recently.
When the air changes, the living things are is slightly confused.
The ecosystem goes mad when it is confused.
The balance of the ecosystem collapses when beginning to go mad.
The problem is very difficult.
ReplyDeleteIt's necessary for us to think about this problem seriously.
But,I'm not interested in this thing.
The future in our hand!!!!