2 Answer the following questions in brief.
(1) State the two causes of volcanic eruption and its two advantages.
(2) State the two main effects of hurricane on human life.
(3) State the main cause of flood in the river.
(4) State the cause and effect of forest fire.
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1)They helped cool off the earth removing heat from its interior. Volcanic emissions have produced the atmosphere and the water of the oceans. Volcanoes make islands and add to the continents. Volcanic deposits are also used as building materials
2)Hurricanes effect people's lives because they can do so much damage. Winds can damage houses, trees, and any outdoor property. If the hurricane doesn't destroy where people live then the major flooding after hurricanes might. When homes are destroyed, people may have to rebuild homes and towns.
3)Localized flooding may be caused or exacerbated by drainage obstructions such as landslides, ice, debris, or beaver dams. Slow-rising floods most commonly occur in large rivers with large catchment areas. The increase in flow may be the result of sustained rainfall, rapid snow melt, monsoons, or tropical cyclones
4)Forest fires increase carbon dioxide levels in the atmosphere, contributing to the greenhouse effect and climate change. In addition, ashes destroy much of the nutrients and erode the soil, causing flooding and landslides.
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