Bacteria are classified into 5 groups according to their basic shapes: spherical (cocci), rod (bacilli), spiral (spirilla), comma (vibrios) or corkscrew (spirochaetes). They can exist as single cells, in pairs, chains or clusters.
Idk cause i cant see the whole page
It is Big Bang and cannot be proved. A hypotheses must be testable. Big Bang is not testable.
I believe it's A. Premature Birth (though they all seem pretty believable)