Answer:
The correct answer will be-gas absent in primordial atmosphere (oxygen).
Explanation:
The Miller experiment was performed in 1953 to show that organic molecules can be formed from the inorganic molecules in the conditions resembling the primordial atmosphere.
Same conditions were created to the unstable atmosphere like a mixture of gases which included- methane, sulfur dioxide and hydrogen but lacked oxygen as it was absent in the primordial atmosphere.
Thus, gas absent in the primordial atmosphere (oxygen) is the correct answer.
Answer:
It was thought that plants evolved from stonewort-like algae. New research shows that the closest relatives to land plants are conjugating green algae
Answer:
Here are seven theories complied by the science daily LiveScience which suggests the origins of Life.
1 Panspermia.
2 Simple Beginnings. ...
3 RNA World. ...
4 Chilly Start. ...
5 Deep-Sea Vents. ...
6 Community Clay. ...
7 Electric Spark. ...
Explanation:
Well, It's either OCD or PTSD... Depending on what the person has gone through in the past, it could be PTSD, PTSD would be caused by being traumatized by something, Like if I got robbed, i would check if my doors are locked.
Answer:

Option B is correct.
Explanation:
There are <u>thousands</u> of proteins and only 20 amino acids.
Hope I helped!
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