The first living organism originated about how many years ago?
Correct answer: A. 3000 Million
- A. 3000 Million
- B. 2000 Million
- C. 600 Million
- D. 225 Million
Explanation
Scientific evidence suggests that the earliest life forms appeared around 3 billion years ago.
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About Introduction to Biology
Biology is divided into fields such as botany, zoology, microbiology, genetics, ecology, physiology and biotechnology, each focusing on a different aspect of life. Levels of biological organization progress from atoms and molecules through organelles, cells, tissues, organs and organ systems to organisms, populations, communities, ecosystems and the biosphere.
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