Which condition is also known as black lung disease?

Black lung disease is the popular name for CWP (Coal Worker Pneumoconiosis).

It is cause after a long-lasting exposure to coal dust, normally ocurring in a couple of months or even years, depending on the intensity of the exposure. It is noticed mosty by strong coughs and by literally having black lungs.

The image pasted below will give you a better idea of how CWP looks like.

Hope it helped,

Happy homework/ study/ exam!

what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.

the supermassive black hole is in the middle of the galaxy.