What do astronomers use to calculate the age of the universe? Select three options.

dark energy
the age of rocks on Earth
the age of the oldest stars
patterns of background radiation
how fast distant galaxies are moving away from us

When analyzing tree rings, what do scientists assume a thin ring indicates?

This class has taught you that the use of science and medicine in practical ways has become an international endeavor. one of the greatest examples of an international science accomplishment is which allows the profiling of human dna, useful not only to science but also medicine. a) forensic science b) the fbi c) the human genome project d) bioterrorism

In what ways does the study of human population differ from the study of wildlife ecology