Countries were separated by continental drift
One reason that rock layers are not horizontal are because of erosion and it also depends we’re you find the rock layer
Answer:
In fact, you may point your flashlight (or laser pointer, if you prefer) at the Andromeda galaxy. There is a non-zero probability that one or more of the photons will be seen by some alien in that galaxy when they happen to glance into the sky at the Milky Way. However, you must take care to aim your flashlight not where Andromeda appears now, but where it will be in 3 million years. Good luck!
Desertification <span>is the persistent degradation of dryland ecosystems by variations in climate and human activities.</span>
