This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Circulatory and respiratory diseases can be the cause of inhaling toxic agents, or when you meet accidents, and harmful lifestyles, like smoking. genetic factors, Infections, and others.