Question

Cough often looks bubbly because it is mixed with air and mucus. It is usually bright red

Answer 1

Answer:

Explanation:

Coughing up blood is not the same as bleeding from the mouth, throat, or gastrointestinal tract. Blood that comes up with a cough often looks bubbly because it is mixed with air and mucus. It is usually bright red, although it may be rust-colored.