The gases present at the origin of the earth were believed to be nitrogen (N2), Carbon dioxide (CO2), water vapor (H20), and maybe some carbon monoxide (CO).
<h3>Origin of the earth</h3>
The earth is believed to have originated in what scientists have referred to as the big bang in which several gases were formed.
The gases present at the origin of the earth were believed to be nitrogen (N2), Carbon dioxide (CO2), water vapor (H20), and maybe some carbon monoxide (CO). The gases aggregated to form amino acids hence the origin of the initial life forms.
Learn more about gases: brainly.com/question/1369730
The sugar- phosphate backbone forms the backbone of DNA.
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I think the answer is C) R I had this question and that was right for me hope this helps!
Answer:
option d is correct. the existence of land bridges between continents.
Explanation:
landland bridge theory which was used to explain why species would end up continents over, such as mammoth travelling to North America, thisthis theory was based on the idea that water eventually Rose to cover these bridges rather than the at having individual plates that moved away from each other.
they help us see because the retina also contains the nerves that tell the brian what the photoreceptors are seeing
