A. How was the life of our early ancestors?​

Our ancestors lived in a cold, dry environment. This means that their energy needs must have been very high. Meat was a major source of calories, which was supplemented by many types of plants gathered from the wild (mushrooms, seeds, tubers, fruit, berries, and roots).

the life of our early ancestors was hard because they need to hunt animals,they should find water and shelter

what's this it's not giving you what have to do.

the arab empire adopted the muslim religion as their main belief. arabs would influence the people from the territories they invaded towards islam (the muslim belief).

nevertheless, throughout the history of the arab empire, rulers brought intellectual individuals from other religions to their centers of learning. these other foreigners included jews, christians, greeks, persians, and indians.   these resulted in the adoption of important knowledge developed by these cultures by the arabic empire. for example, the works of aristotle were translated from greek to arab and indian scientists brought the numerical concept of "zero" to the arabs.

nowadays, 93% of the arab population is muslim, which at the same time is subdivided in sects including the sunni, zaini, alawi, shia. the remaining 7% is composed mainly of christians.