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#Question id: 4935


Which gas was least abundant in Earthʹs early atmosphere, prior to 2 billion years ago?

#XL - T Zoology
  1. O2

  2. CO2

  3. CH4

  4. H2O


Answer:- Option(s): 1


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#Question id: 4622

#XL - S Microbiology

 Catastrophism, meaning the regular occurrence of geological or meteorological disturbances (catastrophes), was Cuvierʹs attempt to explain the existence of

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#Question id: 16843

#General Aptitude

Blue blood

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#Question id: 15677

#XL - S Microbiology

Ultraviolet (UV) radiation around 260 nm is quite lethal but does not penetrate
1. glass 
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March the correct answer

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#Question id: 10281

#XL - Q Biochemistry

Gluconeogenesis is particularly important in plants such as the castor oil plant Ricinus communis and sunflower that store carbon in which form .

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#Question id: 3927

#XL - Q Biochemistry

An operon is __

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