Answer:
The answer is A.
Explanation:
Found it on cancer.gov
Cancerous tumors are malignant, which means they can spread into, or invade, nearby tissues. In addition, as these tumors grow, some cancer cells can break off and travel to distant places in the body through the blood or the lymph system and form new tumors far from the original tumor
The esophagus squeezes food down the digestive tract by an involuntary synchronized muscle movement called the Peristalsis
The place where these molecules fit is called the active site .
A theory is an idea that has yet to be proven by experimentation. A law is a theory that has been proven correct.
