Carbon dioxide is a waste product from breathing. which organ or organs of the body, attached to the trachea, push carbon dioxide out of the body? a. liver b. lungs c. kidneys d. skin

the correct answer is B.lungs 

Major sources of stress, such as a death or divorce, problems in family relationships, job loss, school, and substance abuse, can trigger or aggravate some mental disorders in some people. but not everyone who goes through those things develops a mental illness