Well, i think it's not bacteria, its Hydrochloric Acid. For shakrs ITS REALLY STRONG, i hope this helps or answers your question! :) x
I would say oxygen because respiration is breathing mechanically.
B) They should test their hypothesis before coming to that conclusion.
The second one because they can indicate infection and sickness
Learning that occurs
when an organism makes a connection between two events is called "Associative
learning".<span>
The process involves associating various details or events to
learn a particular fact or information. For example one cannot imagine one eye
of his/her father, whenever he/she will imagine the whole face of their father
will make sense to mind and not single eye.</span>
