The first two stages of evolution took place ___________ years ago.

Thundrads

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Thousands

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Few

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Billions

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Solution

The correct option is B Billions
Life has been in existence on Earth for at least 3.5 billion years but the first two stages of evolution took place in the space of a billion years! The earliest types of cells were believed to be prokaryotic cells. Therefore, (d) is the correct answer.

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The first two stages of evolution took place ___________ years ago.

The correct option is B BillionsLife has been in existence on Earth for at least 3.5 billion years but the first two stages of evolution took place in the space of a billion years! The earliest types of cells were believed to be prokaryotic cells. Therefore, (d) is the correct answer.

The correct option is B Billions
Life has been in existence on Earth for at least 3.5 billion years but the first two stages of evolution took place in the space of a billion years! The earliest types of cells were believed to be prokaryotic cells. Therefore, (d) is the correct answer.