Answer:
Convergent plate boundary is the boundary where two plates collide into each other. At those boundaries volcanic arcs and submarine volcanoes can be formed.
Explanation:
There are three types of convergent plate boundary:
1. <em>Oceanic-oceanic convergence</em>
That is the boundary where two oceanic plates collide. The one which is cooler and denser slides beneath another one. Example is Pacific and Mariana plates.
2. <em>Oceanic-continetal convergence</em>
That is the boundary where oceanic and continental plates collide. Oceanic plate is denser and it always slides beneath the continental. Good example is Pacific and South American Plate.
3. <em>Continental-continental convergence</em>
This is the boundary where two continental plates collide. This phenomenom is known as continental collision. very best example is collision of Eurasian and Indian plate.
At first and secound boundary types both volcanic arcs and submarine volcanoes can be formed. On contrary, third type is not related with volcanic formations, but only with seismic activity (earthquakes).
Teotihuacan is an ancient American city and currently an archeological site in Mexico, close to Mexico City.
The city was ancient even to the Aztecs who, like us, only saw the ruins of the city (the name was given by the Aztecs and we don't know what the original inhabitants of the site called it).
Millet is grown in the sahel because it is the main staple of the people there. also the risk of crop failure is greatly reduced when grown alongside cowpea and sorghum. hope this helps :)
