126 Countries
The most known is of course Russia (earlier sovjet) and USA :-)
You probable mean Bio-Chemical weapons ;-)
126 countries
I know of no "nuclear biological" weapons, perhaps you meant nuclear, biological, chemical (NBC) weapons, which can be any one of these.
126 Countries
all countries, except the 8 or 9 that do.
No Because Chile Isn't All in On Biological Weapons.
Bioweapons are weapons made out of microorganisms, such as anthrax, small pox, or tularemia, and they were used because they were a possible weapon against other countries. If you'd like to know more about biological weapons and biological warfare I suggest you read Biohazard, by Ken Alibeck, an amazing insight into the bioweapons produced by the Soviet Union during the Cold War.
Nuclear weapons weapons of mass destruction, biological weapons.
There are many places where one could find information on biological weapons. One could check 'Ready' for information on biological weapons and threats.
Biological weapons are germs weaponized into superfine powders able to be breathed in and cause death or illness.
Biological weapons involve living things, such as germs. Mercury is a chemical, not a biological. Bio weapons might include the diseases of anthrax, plague, typhus, Ebola, etc.
No, both are legal weapons for nations to use in war. Only chemical and biological weapons are prohibited by international law (although that has not stopped certain countries from using them).
Nuclear weapons, Biological Weapons, Chemical Weapons.