Heat from the air will move into the ice cream
Trypsin is a serine protease found in digestive system of vertebrates. they are produced in the pancreas.it catalyzes the hydrolysis of peptide bonda, breaking down into smaller peptides
in tissue culture, trypsin is used to re suspend cells adherent to the cell culture dish wall.
Erepsin is a protein found in intestinal juices but can also be found in many other cells.
I think the answer is Microevolution
The cow eats ,breaths, has cells,needs water moves