Which of the following can cause a communicable disease?

a. heredity

b. something in the environment

c. a virus

d. lifestyle

Explain why you would or would not have a lasik surgery if you wore contacts or glasses.describe how public opinions related to this surgery have changed over the years.in your own words, explain this surgery as though you are explaining it to someone who has no knowledge of the procedure.

In which way does nicotine cause addiction? by stimulating the brain’s pleasure center by increasing blood-sugar levels by decreasing dopamine levels by reducing depression and anxiety

What is one technique to a person get proper sleep? eat a heavy meal before bed. exercise intensely before bed. practice relaxation breathing before bed. use electronics before bed.