The second largest crater in the world was formed by the impact of a comet according to a 2014 study by researchers in Canada and Ireland. Colliding with Earth almost 1.85 billion years ago, the estimated diameter of the crater is 81 miles (130 km).
How big is a bacteria compared to a human cell? The size of a typical bacterial cell is 0.5-5.0 micrometers, a average human cell is 10 micrometers.8 people found this useful.Edit.he consensus among biologists is that only 5 to 10% of the trillions of cells in our bodies are human. The rest are alien cells: yeast, fungi, bacteria, viruses.
Answer: It is a type of bacteria called Mycoplasma about a diameter of 10Âµm (micrometre). Q12: Name the smallest cell in human body. Answer: Human sperm cell about 5x3 Âµm. Q13: Name the biggest cell in human body. Answer: Human ovam about 1mm in diameter.