Valley rivers are formed due to kinetic energy of rivers falling in from a steep height the River valleys are v-shaped
Answer:
The floodplains provided fertile soil for growing crops.
Explanation:
In the fertile crescent, the most important floodplain is that of Mesopotamia, between the rivers Tigris and Euphrates.
This area of the world is not only where agriculture was first attested, but also the region where the first human civilization emerged: Sumer.
And the floodplain was crucial for this. The rivers flooded their banks with nutrients that were carried in sediments. These nutrients made the soil more fertile, allowing for easier and more productive agriculture, which produced the necessary food surpluses that are required for the development of early civilization.
Answer:
A
Explanation:
Because South America is covered in two sides, the long coast line in chile, and the other side with brazil
The continents seem to have once fit together like a jigsaw puzzle. This supports the fact that they had once broken off from one another
The fossils of the same/similar species of flora and fauna have been found on different continents proving that they had once walked across when migrating
Hope this helps