Migration is a process that has been happening since humankind exists. The reasons have been numerous, with some being more prevelent than others. Unfortunately, apart from migration by choice, there have been and still are migrations that have been forced, and one of the best examples is the migration of enslaved people because of the needs of their owners.
The example of forced migration that is most commonly mentioned is the case of the African Slaves being brought to the Americas. This was a mass migration of millions of people against their will. The more powerful kingdoms of Africa captured people from other kingdoms or tribes and sold them to the Europeans so that they can obtain certain goods, while the Europeans were using the slaves for their plantations.
Explanation: Regolith is formed from the constant bombardment of the lunar surface by space weathering processes, including most prominently meteoroid impacts
Natural Resource is a source of energy that doesn't need any action from humans. The sun doesn't need the help of humans, therefore it is a natural resource
1. Hadean eon --- a. formation of the solar system
2. Archean eon --- c. toxic atmosphere; first bacteria
3. Proterozoic eon ---- d. buildup of oxygen; first eukaryote
4. Phanerozoic eon. --- b. current eon
Explanation:
The Hadean Eon represents the formation of the planet that is time before the reliable fossilized record of the life and ended about 4.0 billion years ago. The Archean eon is characterized by the toxic atmosphere and the arrival of the first single-celled organism as bacterial life forms.
The current era dates to the geologic formation of the Phanerozoic eon and covers about 542 million years and the Proterozoic era was the formation of the first oxygen molecules and first Eukaryota.
