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!
Answer:
D disruption of hibernation or migration cycles
<span>the language used for official business is different from the local language. :D</span>
Answer:
the climate became warmer and the desert expanded
Explanation:
The Sahel region is the region of ecoclimatic as well as biogeographic zone of the transition in the Africa between the Sudanian savanna to the south and Sahara to the north.
At around 2000 BCE, the agricultural techniques of the people of the Sahel region started spreading or diffusing to the other parts of the Africa due to the climate change. The climate became more arid and warmer gradually and the deserts also expanded in the region.