If the student was not wearing protective glasses and the liquid splashed into the student's eye.
When talking about evolution, a good example is bacterial resistance to antibiotics.
We start with a bacteria colony, and in contact with antibiotics, most of them die.
Some of them in the colony do not die and took that antibiotic to create a mutation of its DNA to be resistance to that.
They evolved survive that antibiotic.
Nerve impulses to the brain.
it is more efficient for the body and it gives them time to collect more
