____________ has existed on Earth for millions of years.
Answers
Answer:
The stratigraphic chart of geologic time. Among the oldest known fossils are those found in the Fig Tree Chert from the Transvaal, dated over three billion years ago. These organisms have been identified as bacteria, including oxygenic photosynthetic bacteria (cyanobacteria)—i.e., prokaryotes rather than eukaryotes.
Explanation:
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Answer:
Correct option is
A
4600
Earth came into existence probably 4600 million years ago.
Planet Earth is one of eight planets orbiting the Sun, one of billions of stars in the Milky Way Galaxy, itself one of billions of galaxies in the Universe.
The Universe came into existence 13.7 billion years ago in an incredibly hot, dense explosion called as the Big Bang.
A few billion years later, our Galaxy began to form, but it was not until about 4600 million years ago that the Sun and its family of planets, including the Earth, made their appearance.
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