Which of the following is evidence that matter is too small to be seen without magnification? A Feeling the heat come off the flames of a fire
B Feeling the grains of salt in between your fingers
C Watching salt disappear when it dissolves in water
D Watching rain fall from the sky during a thunderstorm

Which best describes the present-day universe? opaque, expanding very slowly, stars produce heavy elements transparent, expanding at an accelerated rate, stars produce heavy elements opaque, expanding at an accelerated rate, stars produce only hydrogen and helium transparent, expanding very slowly, stars produce only hydrogen and helium