The social media in Iran, in 2009, as well as after that, has mostly been used for propaganda. The freedom of the social media, thus the freedom of speech too, are very limited, almost non-existent in Iran. The government holds strongly the social media and it decides what can go through and what not, with the majority of the content being focused around the government and positives about it, showing the opposition in bad light, and even more, showing the enemies of the country is evil and that they constantly plot something against them.
The amount of heat they are exposed to has a lot to do with the inferences and observations that they make on the density of the earth's core. The inner core is the most compact due to the fact that they have a lot of direct exposure to heat and the gravity of the earth pressung down on it. The inner core is less subjected to those conditions.
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The most vital function of Earth's magnetic field is to deflect most of the solar winds. The solar winds are dangerous level of radiation, that would kills us without our magnetic field.
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Most major rivers in Southeast Asia seem to flow in the same direction. By studying the physical geography of this region, we can tell that these rivers flow from north to south because the major mountain ranges run from north to south. The rivers formed naturally between them in valleys.
