The valleys around the nile, euphrates, and tigris rivers were probably

a.
where the first farmers settled.

b.
the location of a major battle between egyptians and sumerians.

c.
a glacier in ancient times.

d.
first discovered during the 1700s.

If there are laws or rules in a society and they are in conflict, how do we decide which takes precedence?

Which property of soil depends on the size of particles? color odor temperature texture

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