On the map of the united states shown below, four lines have been drawn and labeled a, b, c, and d

the length of which line best represents the distance from earth’s surface to the top of the mesosphere?
(1) a
(2) b
(3) c
(4) d

Atsunami usually is the result of a. a nearby underwater earthquake. b. the winter monsoons. c. seismic activity in the eastern pacific ocean. d. hurricane-force winds.

What was on result of the potato famine

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