Which of the following branches of biology deals with extraterrestrial life forms?

Options :
  1. Ethnobiology
  2. Astrobiology
  3. Exobiology
  4. Ecology
Answer and Explanation :-

Answer: Option 3


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It doesn't matter what you do...so long as you change something from the way it was before you touched it into something that's like you after you take your hands away.