Which of the following appeared on the Earth with the arrival of plants and was absent in the past?

  • A
    Carbon dioxide
  • B
    Methane
  • C
    Ammonia
  • D
    Oxygen

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Similar Questions

The first non-cellular form of life could have originated about $.....$ years ago.

How was free ${O_2}$ released into the Earth's atmosphere,given that there was no free ${O_2}$ at the time of the origin of life?

Match the following and select the correct option.
Column-$I$ Column-$II$
$a$ Darwin $p$ Mutation theory
$b$ de Vries $q$ Protobiosis
$c$ Pasteur $r$ Origin of Species
$d$ Fox $s$ Special creation
$t$ Swan-necked flask experiment

An evolutionary explanation of the origin of plants and animals was given by

The presence of $NaCl$ in body fluids suggests that life originated in:

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