Answer:
Organs
Explanation:
Tissues are groups of similar cells that have a common function. An organ is a structure that is composed of at least two or more tissue types and performs a specific set of functions for the body. Many organs working together to accomplish a common purpose is called an organ system.
Answer:
Exposure to radiation. Family history of cancer/hereditary. Certain chemicals. Viruses and bacterias. Use of tobacco. Poor diet choices. Use of alchohol.
Explanation:
I did research on this topic last week :) sorry i cant explain any better !!