Compare rhyolite to basalt (answer in one word only): Which has a lower density? Which has a lighter color? Which has a more mafic composition? Which has a greater percentage of biotite in it? Which contains Quartz?

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