On early earth, the one that was referred to as "Primordial Soup" is : B. The combination of organic compounds in warm salty water
Many speculated that these organic compounds mutated and evolved into a single cell organism, which became the origin of the organisms on earth
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The earliest vascular plants were seedless, reproducing with instead of seeds (spores)
Hey, I believe your answer would be D. Sugar ribose and the base uracil. I believe this is the answer, because RNA consists of sugar ribose, adenine, guanine, cytosine, and uracil.
Your first option is incorrect, because that's DNA. Where it consists of sugar deoxyribose, adenine, guanine, cytosine and thymine.
Your second option is also incorrect, this is because sugar deoxyribose is in DNA, and uracil is in RNA. These two do not make sense together.
Your third option being incorrect, because sugar ribose is in RNA, but not the base of thymine. RNA consists of uracil, not thymine.
Lastly your fourth option being correct! This answer is correct, because both sugar ribose, and the base uracil are in RNA!~
Answer is D. Sugar ribose and the base uracil.
