How is upper canada different from lower canada?

What season is it in the southern hemisphere when it’s december? a) fall b) spring c) winter d) summer

In a scientific experiment, a is any factor that can be changed or be changed

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