which best describes the present - day universe?\no opaque, expanding very slowly, stars produce heavy…

which best describes the present - day universe?\no opaque, expanding very slowly, stars produce heavy elements\no transparent, expanding at an accelerated rate, stars produce heavy elements\no opaque, expanding at an accelerated rate, stars produce only hydrogen and helium\no transparent, expanding very slowly, stars produce only hydrogen and helium

which best describes the present - day universe?\no opaque, expanding very slowly, stars produce heavy elements\no transparent, expanding at an accelerated rate, stars produce heavy elements\no opaque, expanding at an accelerated rate, stars produce only hydrogen and helium\no transparent, expanding very slowly, stars produce only hydrogen and helium

Answer

Answer:

transparent, expanding at an accelerated rate, stars produce heavy elements

Brief Explanation:

The present - day universe is transparent to electromagnetic radiation in most wavelengths. Observations like those of distant supernovae show that the universe's expansion is accelerating. Stars through processes like stellar nucleosynthesis produce heavy elements beyond hydrogen and helium.