Answer/Explanation:
Tears are made up of lipid, water, and mucus. tears can't exactly be stopped since it is a natural physical and emotional reaction. But, it can be slightly prevented by keeping a neutral face, controlling your breathing, and focusing on other things.
Bacteria is something else that you would need to know
Answer:
having a family history of a certain disease
Explanation:
Lung cancer is very hard to treat and has usually already spread by the time it's discovered. This is because people who have symptoms usually hold off on seeing a doctor, thinking it is something else, or that it will go away. Early detection is extremely important in fighting this disease. Seeing a doctor right away with any signs like chronic cough, coughing up blood or any other concerns is paramount.
D hope that helps you out