Answer to Question 1
Observation and question; hypothesis and prediction; experiment; results and interpretation; support or rejection of hypothesis; and formation of theory, if hypothesis was supported, or development of new questions/hypotheses, if hypothesis was not supported.
Answer to Question 2
Controllable risk factors include high LDL cholesterol, low HDL cholesterol, high blood pressure, cigarette smoking, diabetes, physical inactivity, obesity, an atherogenic diet, and stress. Non-controllable risk factors include age, gender, and genetics.