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Panspermia, an idea that is still a favorite for some astronomers, means:

1.	Creation of life from dead and decaying matter
2.	Creation of life from chemicals
3.	Origin of sperm in human testes
4.	Transfer of spores as a unit of life from other planets of Earth

Subtopic: Origin of Life |

87%

Level 1: 80%+

NEET - 2022

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After about how many years of the formation of the earth, life appeared on this planet?

1. 500 billion years

2. 50 million years

3. 500 million years

4. 50 billion years

Subtopic: Examples of Chemical Evolution | Origin of Life |

78%

Level 2: 60%+

NEET - 2020

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