Louis Pasteur by careful experimentation demonstrated that/the
Phenomenon of chemical evolution
There is spontaneous generation of life
Life comes from pre-existing life
Abiogenic origin of life
In the developmental history of mammalian heart, it is observed that it passes through a two-chambered fish-like heart, three-chambered frog-like heart and finally four-chambered stage. To which hypothesis can this above cited statement be approximated
The theory that evolutionary change is slow and continuous this phenomenon is known as