Dailies Contact Lenses - Where are buffers found in the real world? What are buffers used for by people on a daily basis?

Where are buffers found in the real world? What are buffers used for by people on a daily basis?

i need help for my biology homework...!! And it cant be in the body.....please help!

hi eliana its kyle and i dont know where buffers are used im trying to look it up too