You might not be successful at exterminating microbes - they have been around this long.
- 5 billion years
- 3.8 billion years
- 7 billion years
- 3 billion years
Answer
The correct answer is B) 3.8 billion years.
More Science & Technology questions
- Bacteria consist of this number of cells.
- People use a kind of microbe to make this.
- Of all the microbes on Earth, only about this many have been identified.
- Lactic acid bacteria help achieve this.
- Bacillus Thuringiensis, which is usually found naturally in the soil, is used as this.
- There are billions of these microscopic creatures in your bed and they feed on this.