Doctors can use technology to evaluate preexisting health conditions so one does not push themselves too far. Technology can help monitor your heart rate, blood pressure, fat percentage, etc. This can give a base to know what to know where/ how much you improved when you look back. Technology can also be your own equipment like a treadmill which makes you more fit.
Coronary or Congenital heart disease is the result of reduced blood flow to the heart due to narrow valve or valve defects. This defects may be caused by build up of fatty deposits. So the statement you have given is TRUE.
I hope these links help with your project :)
https://www.hunker.com/12383329/what-are-examples-of-inorganic-fertilizers
http://www.gardenguides.com/129239-examples-inorganic-fertilizers.html
If organ systems failed to work together your body would not work because your heart pumps blood in order for your whole body to work.
