Question

The earth is thought to have 4.6 billion years ago. All of the following items describe what condition may have existed on the early Earth except
A. An aerobic atmosphere contains gases such as carbon dioxide and nitrogen
B. An atmosphere with extremely hot temperature
C. Photosynthetic blue-green prokaryotes populating the ocean
D. Oceans containing a mixture of inorganic compounds such as ammonia
E. A terrestrial environment with a frequently volcanic eruption.

Answer 1

Hint: The early condition of the Earth is that there is very less oxygen present in the atmosphere. The invention of water and the other organic substances on the Earth comes from different other sources such as comets, etc.

Complete answer:
The composition of the early earth is that the atmosphere contains very less and negligible oxygen and has an enormous amount of carbon dioxide, nitrogen gas, water vapour and hydrogen gas and this condition is known as an anaerobic condition. It is also believed that the earth is made up of the residue of the gases and dust of the sun. The early earth is in the form of solid which contains red hot clouds in which the temperature rises to about $4000^\circ C-5000^\circ C$.
The first organisms that are found on the early earth were chemoheterotrophs and they needed chemical organic substances for the production of energy. The atmosphere of the early earth does not contain any oxygen as there were many harmful gases such as methane, ammonia, hydrogen etc. When the earth starts to get cooled the volcanic eruption becomes common as the volcanic eruption emits carbon dioxide.
So, only the photosynthetic blue-green prokaryotes populate the ocean.

Note: The earth completes approximately about 1 giga-years in the evolution of the Earth. The Earth is formed by the gravity drawing the spiral gases.