The study of homologous structures in mature organisms provides evidence for the evolutionary relationships among certain groups of organisms. Which field of study includes this evidence of evolution ?

The first form of life arise slowly through evolutionary forces from non living molecules is called

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 dinosaurs descended from_____ ancestors

What are we referring to ? When we say 'simple organisms' or 'complex organisms'.