4. How do we know that wind has energy? O Because wind is caused by conduction
O Because wind is caused by induction
O Because wind is able to do work
O Because wind is caused by uneven heating

Because wind is able to do work.

Explanation:

Work has different definition in physics and economic.

In physics, work refers to a transfer of energy to a certain object that is caused by the use of force in the direction of the displacement.

Let's take windmill as an example.

Windmill utilize the force of wind to  generate electricity. This could only happen because wind could produce kinetic energy that is directed to rotate the generator within the windmill. This rotation of the generator is what produced the electricity. This process wouldn't be possible if wind does not have energy.

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.