Answer:
The many processes by which the body controls its internal environment are collectively called homeostasis. The complementary activity of major body systems maintains homeostasis
Explanation:
Answer:
Immigration
Explanation:
In that decade alone, some 600,000 Italians migrated to America, and by 1920 more than 4 million had entered the United States
Answer:
To increase our survival chance.
Explanation:
In order to survive in the harsh environment, Humans generally need to do 2 things : fulfill our basic needs and defend ourselves from external threats.
Both of them would be much easier if Humans are working together in a group.
For example, during hunter/gatherer eras, catching animals that can run faster than humans will be much easier if we have teammates to surround the prey rather than working alone.
On top that, being in a group also provide better protection from the attacks of wild animals or other humans. This is why human creatures get transformed into a social being.
Answer: Partisan voting is the most effective and the most common in Congress. There are 535 congressmen and no one congressman can get anything done by himself. It is only through working with one's party that a senator or house member can get legislation passed.
