About how long ago was the Earth formed?

The theory of panspermia was proposed to explain the

Who conducted experiments on evolution to prove that life originated from biochemicals for the first time?

During the origin and evolution of life,key biological compounds were progressively synthesized in the ocean with the help of energy obtainable from:

Which theory argues that life on Earth came from outer space?

Match the following and choose the correct combination from the options given.

Column-$I$	Column-$II$
$A$. Robert Hooke	$1$. Mutation theory
$B$. Charles Darwin	$2$. Swan-necked flask experiment
$C$. Hugo de Vries	$3$. Origin of species
$D$. Louis Pasteur	$4$. Micrographia