Plants die if .................
Plants die if you don't water them.
If you leave butter in the sun, .................. .
If you leave butter in the sun, it melts.
If you mix green, red and blue light, ..................
If you mix green, red and blue light, you get white light.
If you subtract 12345 from 23456, .................
If you subtract 12345 from 23456, you get 11111.
Metal turns red and then white if .............. .
Metal turns red and then white if you heat them.
If you mix green, red and blue paint, ...........
If you mix green, red and blue paint, you get black paint.