<span>The origin of the Sudan civil war lies in the conflict between the Muslim Arabs and Christian animists. Until 1946, the British government, in collaboration with the Egyptian government administered south Sudan and north Sudan as separate regions.Southern Sudan is inhabited primarily by Christians and animists while most of the north is inhabited by Muslims who were culturally Arabic. The Sudan civil war resulted from conflict between these two groups.</span>
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All of the above are correct
The greenhouse effect is the rise in temperature that the Earth experiences because certain gases in the atmosphere (water vapor, carbon dioxide, nitrous oxide, and methane, for example) trap energy from the sun. Normal warming is mostly caused by natural gases.
