Question

1. the approximate age of the universe is estimated to be (1) 13.8 million years (2) 4.6 million years (3) 13.8 billion years (4) 4.6 billion years (4) younger, larger, and contains more stars 18) the theory that the universe is expanding is supported by data from the (1) blue shift of light from distant galaxies (2) red shift of light from distant galaxies (3) nuclear fusion of radioactive materials (4) nuclear decay of radioactive materials

Explanation:

13)

Current scientific consensus estimates the age of the universe to be about 13.8 billion years.

The red - shift of light from distant galaxies indicates that the galaxies are moving away from us, which supports the theory of the expanding universe.

Answer:

(3) 13.8 billion years

18)