Select all the apply Regional urban centers face these challenges.

lack of housing

pollution

population decline

population shift to rural areas i

nadequate services​

How do convection currents form underwater mountains?

South america is located within which hemisphere?

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