Wines that have the highest concentration of alcohol are called fortified wines. Alcohol content in fortified wine can be as high as 18%, and happens when the yeast dies which adds more alcohol to the wine.
Smoking causes chronic, repetitive lung infections. You've got a lot of reserve, but every infection adds another micro-scar to the lung.
Humidifiers help with your allergies,and it sometimes helps clean your system A humidifer adds humidity (usually water) to the air.
Nasal congestion interferes with the sense of smell, and the sense of smell is what adds nuance to the sense of taste.
It certainly adds effect.
Hyperbole in grammar adds effect to a sentence. It typically adds emphasis, or makes the phrase more colorful than it would be normally.
Each level of height adds another layer that you must progress through so it is slower.
It raises temperatures and adds CO2.
Magnification, formerly Microsoft Magnifier, is a screen magnifier program for persons who are visually challenged and use Microsoft Windows. When it's running, it adds a bar to the top of the screen that magnifies the location of the mouse.
adds to water weight
division of labor
it adds suspense and keeps the audience captivated