The dependent variable alters
Answer:
1.It helps to digest our food.
2.It is used as antibiotics to treat bacterial infection and disease.
3.It is used by humans to create food products such as cheese, yoghurt, pickles, soy sauce and vinegar.
4.It is use to break down our sewage and to clean up oil spills..
Answer: Irish Terriers, Lakeland Terriers, Lowchens, and Kerry Blue Terriers
Explanation: Don't forget you can also teach them to not bark so often.