HER ROYAL HIGHNESS PRINCESS LALLA HASNAA, CHAIRPERSON OF THE NATIONAL CAMPAIGN FOR THE PRESERVATION OF THE ENVIRONMENT, ADDRESSES AN OPEN LETTER IN WHICH SHE INVITES ALL CITIZENS TO ENSURE THE PRESERVATION OF THE ENVIRONMENT, WHICH, AS SHE STRESSES, DOES NOT FALL UNDER THE SOLE RESPONSIBILITY OF STATES AND THEIR GOVERNMENTAL ACTION, BECAUSE IT IS THE RESPONSIBILITY OF ALL MEMBERS OF SOCIETY.