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.
The normal flora are bacteria which are found in or on our bodies on a semi-permanent basis without causing disease. There are more bacteria living in or on our bodies, than we have cells of our own. A human body contains around 10 13 cells.The human body is home to around 10 14 bacteria.One fourth of fecal weight is made of bacteria! The normal flora are particularly important in the large intestine.here are more bacteria living in or on our bodies, than we have cells of our own. A human body contains around 10 13 cells. The human body is home to around 10 14 bacteria. One fourth of fecal weight is made of bacteria!