vnvivekthakur2006 Asked: December 2022 what generation can we detect effective and ineffective symptoms
vnvivekthakur2006 Asked: December 2022 which is the most used communication tool in disaster management1 telegram2 mobile phone3 satellite phone4 computer
vnvivekthakur2006 Asked: December 2022 how do we came to know about the existence of extinct organisms