Several species of bacteria, such as E. coli, can be found in the gut of many animals and help maintain the conditions necessary for the blank of food

E. coli is a specie of bacteria that are found in the gut of many animals which helps in maintaining the conditions necessary for the digestion of food.

Explanation:

E. coli is a bacteria which causes no harm to the human or other animals while living in the stomach. In stomach, it helps the digestion of food and make nutrients like vitamin K, which is necessary for the growth of animal body and make the stomach healthy.

cancer   is   essentially   uncontrolled   mitosis   of specialized cells