Stanley Miller's experiments showed a pre-cellular life could have begun with the formation of lipids, but it should be noted that this is not necessarily true.
Answer:
A
Explanation:
<em>The correct option would be </em><em>A.</em>
<u>The presence of ammonia in the atmosphere of primitive earth provided the nitrogen found in the amine groups of amino acid and the nitrogenous bases in DNA. This has been proven through the simulation experiment of the primitive earth's atmosphere by Stanley Miller and Harold Urey.</u>
The water in the primitive atmosphere was formed from the condensation of water vapour from volcanoes that were characterics of the earth's environment while oxygen in itself is not needed for photosynthesis but a by-product of it.
Answer: A scientific law is a theory that has been proven to be true everytime that event occurs, say laws of motion for example. A theory is really just a scientific hypothesis or a piece of knowledge believed to be true but not proven, its just a theory. Hope this helps, good luck!
The genetic recombination of human influenza A caused massive, widespread epidemics that affected the global human population several times in the twentieth century.
<h3>What is influenza ?</h3>
Influenza is a disease caused by virus which is contagious.It is different from a normal cold as it shows severe symptoms than flu.
Influenza is caused by influenza virus and people get infected when they breathe in tiny airborne droplets from the cough or sneezes of infected person.
Outbreaks of influenza A virus occurred in twentieth century.During 1918 influenza pandemic was the most dangerous pandemic.
Therefore, the genetic recombination of human influenza A caused massive, widespread epidemics that affected the global human population several times in the twentieth century.
Learn more about influenza here:
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Wind contributes the least!
