List five factors or behaviors that affect cholesterol levels in the body, how these factors affect cholesterol levels, and whether the effect is positive or negative with regards to a person's health. 3. explain how cholesterol levels could be linked to health events such as strokes and heart attacks. 4. what do you feel are the pros and cons of using cholesterol-lowering drugs to treat high cholesterol?

Hey there,
Q1 & Q2) 
1) Heredity- Genes carry genetic information for cholesterol. So, it can be passed down from your parents.
2) Diet- Cholesterol depends on the food you eat. If you eat food with too much saturated fat, you get a high level of cholesterol. 
3) Weight- If you are obese, you are more prone to get cholesterol. Thus, you need to lose weight
4) Exercise- Exercise regularly to maintain a perfect cholesterol level
5) Stress- If you are a student, take breaks in between study timings to keep you less stress or if you are an adult, go for walks and do something that you like the most to calm your brain down.

Q3) Cholesterol causes plague to grow in your hearts. This thick, hard plague will block the arteries and will cause heart attacks and strokes. 

Q4) Pros- Helps maintain healthy cholesterol levels, lowers risks of heart attacks and strokes
       Cons- Could create too many HDL leaving not enough cholesterol for the body to be healthy.

Hope this helps :))

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A- a reduction in biodiversity