Your question is rather unclear but from what I can tell either there were not an even amount of Petri dishes or some of them were left open while others were not.
Answer:
Archaebacteria
Explanation:
Archaebacteria is a group of single-celled organism present on the earth which are thought to be descended from the ancient bacteria.
These bacteria can survive the extreme or harsh conditions present on the Earth-like in the hot springs.
The archaebacteria cell membrane is made up of ether-linked phospholipids which are ester-linked in Eubacteria and eukaryotes. The sugar present in the archaebacteria is very similar to peptidoglycan in composition but it is not peptidoglycan.
Thus, Archaebacteria is the correct answer.
It is found in the cytoplasm as a simple circle.
Answer:
An experimental group, also known as a treatment group, receives the treatment whose effect researchers wish to study, whereas a control group does not. They should be identical in all other ways.
