Answer:
Camels were used as domestic animals because Camels have long been domesticated and, as livestock, they provide food (milk and meat) and textiles (fiber and felt from hair).
Answer:
The strong nuclear force holds most ordinary matter together because it confines quarks into hadron particles such as the proton and neutron. Cosmology is a branch of astronomy that involves the origin and evolution of the universe, from the Big Bang to today and on into the future.
Explanation:
The strong nuclear force is responsible that protons in the nucleus of the atoms do not repeal each other.
There are several reasons why many South Americans move from rural to urban areas, but in general many do this because there are more opportunities and higher pay in urban areas.