How are populations of squatter settlements sustained?

Discuss how relative and absolute dating are used to assign ages to rocks. specifically, how are the two dating methods different from each other? discuss the technique of absolute dating commonly used to date rocks.

What conclusión can be drawn about the middle east

Which revelation resulted from the observation of the spectrum of different galaxies? a. there were more galaxies whose spectrum was blueshifted b. there were no galaxies whose spectrum was redshifted c. there were more galaxies whose spectrum was redshifted d. there were no galaxies whose spectrum was blueshifted