What did Edwin Hubble use to calculate the expansion rate of the universe? A. Levels of helium in the universe
B. Levels of background radiation
C. Differences in redshift of galaxies
D. The existence of planets outside of our solar system

Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?

This is really important 1.which of the following prefixes represents the largest value? (2 points)gigahectorkilomilli2.which of the following types of graphs is best for plotting the mean, median, and mode of data? (2 points)bar graphbox-and-whiskercircle graphstem-and-leaf

How to tell if a molecule is polar or nonpolar with electronegativity