Question

Which body systems will be directly affected when suffering from smoking-related diseases where oxygen levels are depleted?

Choose all answers that are correct.

A. circulatory system
B. endocrine system
C. respiratory system
D. skeletal system

I think it is b and c

Answer 1

Indeed, C and B both are correct, however, A is also correct as your circulatory system will be mostly affected due to lower oxygen levels. Due to these, there will also be less oxygen which can be caried around in your bloodstream.