D. Holding your nose
Your sense of smell is a big part of your taste, which is why it helps to plug your nose when eating something bad.
They are related because they are all in the same blood or family you breathe in oxygen and remove carbon dioxide the carbon dioxide it helps other stuff in the ecosystem to survive or live so its like this people breathe oxygen while plants breathe carbon dioxide.
Photosythesis
CO2 + H2O + ( sunlight ) = glucose + O2
It becomes positive because ATP synthase allows H+ ions to pass through the membrane .
