Genres:
Science, General Knowledge
Grades:
لِماذا نُصابُ بِالْحَساسيَّةِ؟
تَنْتَشِرُ الْـحَساسيَّةُ انْتِشارًا كَبيرًا في عَصْرِنا الْـحَديثِ، وَالْعَجيبُ أَنَّهُ كُلَّما ازْدادَ التَّحَضُّرُ وَالتَّمَدُّنُ، ازْدادَتْ أَمْراضُ الْـحَساسيَّةِ. فما السبب يا ترى؟
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