A. Eratosthenes
You can google it, if you want to.
Human migration occurred because of several factors. The reasons are the following:
1.food shortages
2.War
3 Seasonal changes
4.Disease and epidemic.
Africans are nomadic people. They thrive more from their environment. They only had to stop migrating during the agricultural era, wherein they learn to plant and tend crops and started cattle herding.
Answer:
Plastic pollution is now considered one of the largest environmental threats facing humans and animals. The material is made to last much longer than a human lifetime, but that also means its impact on the planet lasts a lifetime too.
