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RNA world Hypothesis.

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Why did the early man scholars reject fossils as a mean to trace human evolution?

Early man scholars rejected fossils as a means to trace human evolution because they held religious or cultural beliefs that contradicted the idea of human evolution. Additionally, fossils were not well understood or widely accepted as evidence of human ancestry at the time.


What role did thee appearance of the ozone layer play in the evolution of early life?

Ozone played a vital rose after appearance. It led to evolution of complex organisms.


Did lipids exist during evolution?

Yes, lipids have existed since the early stages of evolution. They are essential components of cellular membranes and play critical roles in energy storage and signaling processes. The presence of simple lipids in primordial environments likely contributed to the formation of early cellular structures, supporting the development of more complex life forms. Their fundamental role in biochemistry underscores their significance in the evolution of life on Earth.


What element upon which most modern organisms depend was missing from earth's early atmosphere?

Oxygen was the element missing from Earth's early atmosphere, which eventually accumulated due to early photosynthetic organisms. This change in the atmosphere allowed for the evolution of organisms that rely on oxygen for respiration.


Did chemical evolution precede animal evolution?

Yes. Animals are composed of chemicals. Chemical evolution typically refers to stellar nucleosynthesis, the creation of elements by nuclear fusion in the cores of stars, and the synthesis of elements heavier than iron via star bursts--supernova. Biochemical evolution would refer to the formation of more complex molecules, such as the spontaneous generation of amino acids from less complex molecular arrangements.