The organisms of earth are well protected from the layer of a gas which covers the earth. It is known as

  • A
    Nitrogen
  • B
    Ozone
  • C
    $C{O_2}$
  • D
    Dust

Similar Questions

If you go back in the history approx. $4500$ million years back when atmosphere was reducing the organism were

What is evolutionary biology ?

Following are the two statements regarding the origin of life.

$(A)$ The earliest organisms that appeared on the earth were non­green and presumably anaerobes.

$(B)$ The first autotrophic organisms were the chemoautotrophs that never released oxygen.Of the above statements which one of the following options is correct?

  • [NEET 2016]

Give scientific reasons : Life originated from the earths inorganic atmosphere is the post but this no longer happens today
 

Describe various theories of origin of life.