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Question
The Big Bang occurred ______ years ago.
Options
13.7 billion
15 million
15 billion
20 million
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Solution
The Big Bang occurred 13.7 billion years ago.
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The only evidence of the big bang theory is?
Match the following
| Column A | Column B | |
| a) | Atavism | caudal vertebrae and vermiform appendix |
| b) | Vestigial organs | a forelimb of a cat and a bat’s wing |
| c) | Analogous organs | rudimentary tail and thick hair on the body |
| d) | Homologous organs | a wing of a bat and a wing of an insect |
| e) | Wood park | radiocarbon dating |
| f) | W.F. Libby | Thiruvakkarai |
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