The Urey-Miller experiment mixture contained the following,except:

Which of the following was most likely to have been absent in free form in the primordial atmosphere at the time of the origin of life?

Early Greek thinkers thought units of life called ....... were transferred to different planets including Earth.

What were the contributions of the scientists Louis Pasteur $(1860)$,Oparin,and Haldane to the study of the origin of life?

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.

Assertion : Organic compounds first evolved in earth required for origin of life were protein and nucleic acid.
Reason : All life forms were in water environment only.