The correct answer is the second option. Complete
The livestock overgrazing of the Sahel resulted in desertification.
Explanation:
The Sahel is a region roughly stretching in an east to west direction. It separates the Sahara Desert on the north, and the steppes and savannas on the south. This region is semi-arid, being dominated by short grasses that are well adapted to prolonged periods of drought.
There a re people that live in this region, and thus there are human activities. Some of the prime human activities is the farming of livestock. The livestock needs grazing, and considering that it needs it constantly, an area that doesn't provide lot of food like the Sahel, is not able to sustain that. That contributes to overgrazing, which in turn contributes to desertification of the Sahel, so the Sahara Desert is gradually moving southwards.
The Sahel occupies territory in the countries:
- Senegal
- Mauritania
- Burkina Faso
- Mali
- Niger
- Nigeria
- Chad
- Sudan
- Eritrea
Learn more about overgrazing brainly.com/question/8477706
#learnwithBrainly
The answers are:
A. dinosaurs
- Dinosaurs were the dominant life form during the Mesozoic Era, they came in in all shapes and sizes, from little chicken-sized raptors to giant herbivorous creatures. In general, they were split into two groups, which roughly corresponds with the way of movement, bipedal or fourlegged.
B. birds
- The Archaeopteryx was the so-called missing link in the bird's evolution, once this creature was discovered the things became much clearer. It is a perfect creature that is like a crossbreed of a little raptor and a bird.
B. a meteorite collision
- Around 65 million years ago a big meteorite hit the Earth, right of the eastern coast of Mexico, near Yucatan, and it managed to release an enormous amount of force and also trigger much of the volcanoes that caused a global climate change in just a few days that exterminated the dinosaurs.
