When zoo keepers needed to teach a bear to let a vet look at the bear's teeth, the keepers started feeding the bear each time he stuck his nose through a slot in a cage door. After two days of that, the keepers fed the bear when he stuck his nose in the slot and let a keeper lift the bear's lip. On the fourth day, they fed the bear when his nose went into the slot, the bear's lip was raised, and a keeper touched the bear's teeth. This approach is called:

answer; the correct answer to the above statement is to increase the production of milk in a herd of milk cows, the highest producing cows were chosen as the mother;

explanation:

i believe the primary and secondary sectors

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.