An apple is placed on a scale. the scale shows that the apple weighs 1/4 a pound. this demonstrates that the apple has a: atoms. b: elements. c: vitamins. d: weight.

answer: you could do some invislibe ink.

explanation: i will tell you how to if u answer my question.

air

in a tire you fill a tire with air

then a couple days later you check the air pressure in the tire

hope this mark me brainliest