Ppt natural resources bhavani

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©2009 abcteach.com ROLE OF INDIVIDUALS IN PRESERVING NATURAL RESOURCES

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Transcript of Ppt natural resources bhavani

Page 1: Ppt natural resources bhavani

©2009 abcteach.com

ROLE OF INDIVIDUALS IN PRESERVING NATURAL RESOURCES

Page 2: Ppt natural resources bhavani

A forest is any area with a lot of A forest is any area with a lot of trees. There are forests all over the trees. There are forests all over the world. The type of forest varies world. The type of forest varies depending on the location of the depending on the location of the forest: for example, there are forest: for example, there are tropical rain forests, coniferous tropical rain forests, coniferous forests, and deciduous forests.forests, and deciduous forests.

Forests

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Forests

Forests occur naturally, but Forests occur naturally, but they can be affected they can be affected positively and negatively positively and negatively by human behavior. If a by human behavior. If a forest is carefully replanted forest is carefully replanted and allowed to grow, it can and allowed to grow, it can exist in balance. If the exist in balance. If the forest is cut down faster forest is cut down faster than it can grow back, then than it can grow back, then it will be used up quickly.it will be used up quickly.

Forests occur naturally, but Forests occur naturally, but they can be affected they can be affected positively and negatively positively and negatively by human behavior. If a by human behavior. If a forest is carefully replanted forest is carefully replanted and allowed to grow, it can and allowed to grow, it can exist in balance. If the exist in balance. If the forest is cut down faster forest is cut down faster than it can grow back, then than it can grow back, then it will be used up quickly.it will be used up quickly.

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ForestsForests serve as home to Forests serve as home to many of the organisms many of the organisms that live on the land. that live on the land. Forests are also very Forests are also very important because they important because they are major contributors to are major contributors to recycling and cleaning recycling and cleaning the world supply of the world supply of oxygen. Forests also oxygen. Forests also provide wood, which is provide wood, which is useful both as a useful both as a construction material construction material and as a fuel source.and as a fuel source.

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Fossil FuelsFossil fuels take millions of Fossil fuels take millions of years to form. They are the years to form. They are the product of the fossilized product of the fossilized remains of dead plants and remains of dead plants and animals that have been animals that have been exposed to the heat and exposed to the heat and pressure deep within the pressure deep within the earth’s crust. There are many earth’s crust. There are many types of fossil fuels, such as types of fossil fuels, such as petroleum (gasoline), natural petroleum (gasoline), natural gas, and coal.gas, and coal.

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Fossil FuelsFossil fuels are arguably Fossil fuels are arguably one of the most valuable one of the most valuable natural resources in natural resources in modern times. It is modern times. It is estimated that 86 percent of estimated that 86 percent of the world’s energy comes the world’s energy comes directly from burning fossil directly from burning fossil fuels. Fossil fuels are the fuels. Fossil fuels are the source of energy for almost source of energy for almost every machine, including every machine, including the generators that produce the generators that produce electric energy.electric energy.

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Fossil FuelsBecause fossil fuels take so Because fossil fuels take so long to form, they are being long to form, they are being consumed faster than they consumed faster than they can be produced. Fossil can be produced. Fossil fuels are a major contributor fuels are a major contributor to air pollution because to air pollution because when they are burned they when they are burned they release many dangerous release many dangerous gases such as nitrogen gases such as nitrogen dioxide, methane, and dioxide, methane, and carbon dioxide.carbon dioxide.

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In andhrapradesh that to in hyd ,,,, patancheruvu his the main industrial area which is causing a great air pollution ,even water pollution ,,, because there are many industries ,,,, mainly boiling of tubes , inks ,pragon slipers factrys are realseing a lot harmful gases ,,, because of breathing this gases the people are effecting by skin cancers , fevers ,polio etc …and people who are working in those factries are given more money … for the sake money they are loosing there wonderful life with such diseases……… Actualy its my real expirence …. The factreies releases fules at time of 10.30 pm to 3.00 am …. It will be very horable even to breath for 5 mins and realseing of waste into the water ,,water is been polluted a lot . .

HOW FOSSIL FUELS ARE EFFECTING RIGHT NOW IN HYDERABAD

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WATER POLLUTION

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Solar Energy

The sun is the closest The sun is the closest star to Earth. It brings star to Earth. It brings heat and light to the heat and light to the world. Some areas of world. Some areas of the world, such as the world, such as those closest to the those closest to the equator, have more equator, have more sun than others.sun than others.

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Solar Energy

The sun shines naturally The sun shines naturally but it is not affected by but it is not affected by human activity. It cannot human activity. It cannot be used up. However, its be used up. However, its intensity varies with the intensity varies with the seasons, and it is not seasons, and it is not available at night.available at night.

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Solar EnergyThe sun’s rays are used The sun’s rays are used for energy by organisms for energy by organisms that undergo that undergo photosynthesis. Nearly photosynthesis. Nearly every organism on the every organism on the planet gets energy planet gets energy through photosynthesis, through photosynthesis, directly or indirectly. directly or indirectly. There are also ways that There are also ways that people can utilize the people can utilize the energy that the sun energy that the sun provides. provides.

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Solar Energy

We can use solar We can use solar power in simple power in simple (facing the sun to get (facing the sun to get warm, using warm, using greenhouses to grow greenhouses to grow food, etc.) and more food, etc.) and more complex (solar panels complex (solar panels for heating) ways.for heating) ways.

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Wind is caused by Wind is caused by the uneven heating the uneven heating of the atmosphere. of the atmosphere. Some areas of the Some areas of the world, such as costal world, such as costal regions, have more regions, have more wind than others wind than others because the terrain because the terrain of the area is of the area is relatively flat and relatively flat and has few obstacles to has few obstacles to block the wind from block the wind from blowing.blowing.

WindWind

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WindThe wind blows naturally – it is not The wind blows naturally – it is not caused by human activity, and it caused by human activity, and it cannot be used up.cannot be used up.

The power of the wind drives The power of the wind drives sailboats. It has been used to sailboats. It has been used to power windmills that grind grain. power windmills that grind grain. Windmills can also use the circular Windmills can also use the circular movement of the blades to turn a movement of the blades to turn a turbine. This is increasingly used turbine. This is increasingly used as a means of generating as a means of generating electricity.electricity.

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WindWind power does not make Wind power does not make greenhouse gas emissions. greenhouse gas emissions. It does not directly cause It does not directly cause pollution. However, critics pollution. However, critics of wind power say a large of wind power say a large number of windmills could number of windmills could cause problems for cause problems for animals, especially animals, especially migratory birds. Some migratory birds. Some people think the windmills people think the windmills are unattractive.are unattractive.

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Thank you - Bhavani