Almost all enzymes will end in -ase but not all, some examples of enzymes are:
catalase
lactase
maltase
dna polymerase
amylase
lipase
trypsin
acetylcholinesterase
Answer:
You take any of the "signs of change in populations of organisms and their environments". For imagine, Australopithecus (early man) turning to Homo sapiens. In that way they could tell that you took this journey.
