Overcrowding and slums developed in many impoverished countries in the 20th century, mostly due to large migrations to cities from people looking for work.
Answer:
The Sahel is the ecoclimatic and biogeographic zone of transition in Africa between the Sahara to the north and the Sudanian Savanna to the south. Having a semi-arid climate, it stretches across the south-central latitudes of Northern Africa between the Atlantic Ocean and the Red Sea. Wikipedia
Area: 1.179 million mi²
The Sahel has a tropical, hot steppe climate (Köppen climate classification BSh). The climate is typically hot, sunny, dry and somewhat windy all year long. The Sahel's climate is similar to, but less extreme than, the climate of the Sahara desert located just to the north.
Explanation:
Climate change causes problems in our environment. The change in climate caused ice to melt and temperatures to rise. Because of the rising temperatures, habitats can be ruined and the animals that depend on that land and are living there can go extinct.
I can't see the picture, but to do the dilation you must first figure out the coordinates of the first image and then figure out what half of it is and add that on to the new image or take that much off of the new image.
*To dilate means to make bigger or smaller
