Answer:Astronomers estimate the age of the universe in two ways: 1) by looking for the oldest stars; and 2) by measuring the rate of expansion of the universe and extrapolating back to the Big Bang; just as crime detectives can trace the origin of a bullet from the holes in a wall.
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The scientific method is defined as a set of procedures for gathering and interpreting data
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His career illustrates the possibilities for diffusion and intermingling of cultures brought about by the Mongol conquests. hope this helps
