Question

Which correctly describes how the first life on earth could have occurred by spontaneous generations

Answer 1

In an environment without free oxygen, amino acids, nucleic acids, and lipids were able to increase in number. In large amounts, these molecules could have formed simple life forms.

Step-by-step explanation:

The abiogenesis i.e the origin of life states a hypothesis that primitive life originated from inanimate things. It is believed that before-life, chemical reactions between carbon and water gave rise to life, probably with lightning. Which induced the production of the following chemicals: lipids, carbohydrates, amino acids and nucleic acids. The reaction over a period of time produces the self-replicating molecules of Ribonucleic Acid.

This gives a great tendency for the first life to have been generated from a sporadic increase of amino acids, nucleic acids, and lipids in the absence of oxygen.

Answer 2

According to spontaneous generation, life could most probably have occurred as a result of:

First, the various chemicals could react with each other to form lots of new compounds, some of which would be more complex. Some supposed that the molecules central to life, like sugars and amino acids, could all have formed in Earth's waters. Modern theories have departures from most of spontaneous generations premises, still, the origin of life on Earth continues to be set on water.