A biology student wanted to study the effect of fertilizer on the growth of tomato plants. He placed four of the same type of tomato plants into separate containers, each containing the same amount of soil. Each pot received a different watering solution, containing varying amounts of fertilizer. The table below shows the average height of the plants by the end of one week.
Plant group Fertilizer amount (g) Avg height of plants (cm)
1 0 3.0
2 5 3.2
3 10 4.4
4 20 5.0

A. The height of the plants

B. The amount of fertilizer

(Choice C)

C. The type of tomato plant

D. The amount of soil provided

fir trees are found in areas with cooler climates. fir trees have needles for leaves and remain green year-round.

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.