Many people believe that American biologist James Watson and English physicist Francis Crick discovered DNA in the 1950s ... each pair held together by hydrogen bonds, but the structure also ...

Most DNA molecules consist of two polymers (double-stranded) of four nucleotides that each consist of a nucleobase, the carbohydrate deoxyribose and a phosphate group, where the carbohydrate and ...

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But there is an even more dangerous weapon than the atomic bomb. It is the thermonuclear weapon, also known as the hydrogen bomb. or **H-bomb**. Thermonuclear weapons are a more advanced type of ...