Final answer:
The 1973 Nobel Prize was awarded in several categories, including Physiology or Medicine to Karl von Frisch, Konrad Lorenz, and Nikolaas Tinbergen; Chemistry to Ernst Otto Fischer and Geoffrey Wilkinson; and the Peace Prize to Henry Kissinger and Le Duc Tho.
Step-by-step explanation:
In 1973, the Nobel Prize was awarded in various categories. For instance, the Nobel Prize in Physiology or Medicine was jointly awarded to Karl von Frisch, Konrad Lorenz, and Nikolaas Tinbergen "for their discoveries concerning organization and elicitation of individual and social behaviour patterns.
" In the field of Chemistry, Ernst Otto Fischer and Geoffrey Wilkinson received the prize "for their pioneering work, performed independently, on the chemistry of the organometallic, so called sandwich compounds." The Nobel Peace Prize was awarded to Henry Kissinger and Le Duc Tho for their efforts to negotiate a peace settlement in the Vietnam War, although Le Duc Tho declined to accept the prize.