One of the major risk factors for heart disease is high blood cholesterol. Cholesterol, a fat-like substance carried in your blood, is found in all of your body's cells.
The only way I could answer this is because I just saw one that matches it but to be sure I will copy it here.
Which of these is most responsible for causing eating disorders?
A. Media images
B. A government agency’s website about healthful food choices
C. Regular exercise
D. A university’s website about nutrition research
The correct answer to this is A, media images
Answer:
The answer would not be that they work independently
Explanation:
Every system need each other to work eg. The skeletal system needs the nervous system in oder to work because every time you need to move your brain signals to you legs so they could move.