in 1987
1600s
Theodor Boveri
36
electrons, protons, CO2 and water. btw it is not "kreb cycle" but Krebs cycle (mr. Hans Krebs discovered it ;)
There were several scientist who discovered cellular respiration. One is Han Krebs, who discovered cellular respiration on citric acid cycle. Another is Claude Bernard, who invented cellular respiration's medicinal attribute.
Hans Krebs and Kurt Henseleit in 1932
The water cycle is not an idea that was discovered at any one time, and the ideas go back beyond the 1980's.
The water cycle is not an idea that was discovered at any one time, and the ideas go back beyond the 1980's.
The water cycle is not an idea that was discovered at any one time, and the ideas go back beyond the 1980's.
He dissected animals and made discovered the theory of the circulation cycle.
Maybe by watching the cycle or trial and error