The embryonic development of an animal from the zygote to the adult stage is known as:

What did Stanley Miller synthesize in his experiment?

Assertion: The earliest organisms that appeared on the earth were non-green and presumably anaerobes.
Reason: The first autotrophic organisms were the chemoautotrophs that never released oxygen.

Who proposed the $Cosmozoic$ theory?

In their experiment,Urey and Miller mixed $CH_4, H_2, NH_3$,and water vapor in a closed flask and provided electrical energy at a temperature of ........ to simulate primitive atmospheric conditions. (in $^{\circ} C$)

Read the following statements and find out the correct ones:
$A.$ Spontaneous generation theory was approved once and for all.
$B.$ Pasteur showed that in pre-sterilized flasks,life did not come from killed yeast.
$C.$ Oparin observed the formation of amino acids by creating electric discharge in a closed flask.
$D.$ Life appeared $500$ million years before the formation of the earth.