Who proved that oxygen evolved in photosynthesis comes from water?

Theory of catastrophism was supported by

The molecular structure of insulin was first described by

Alexander Fleming in 1929 discovered

'Quiescent centre theory' was proposed by

Virus was discovered by whom?

'Jumping genes' in maize were discovered by

The scientist who was awarded Nobel Prize in 1959 for in-vitro synthesis of polyribonucleotide

Ecological pyramids were discovered by

Who postulated the motion theory?