BY:ALEXANDRA ALZATE5B

HOW DO PEOPLE USE NATURAL RESOURCES

PRESENTATION PAGE Alexandra Alzate Ospino

5BBennett School

Cali-ColombiaMarch 1 of 2010

• On this virtual album I am going to talk about how do people use natural resources, the bad ways and the wrong ways.

• Here I am going to tell you also some proposals to save water .• Here is also going to be some information about the types of

natural resources .• I am going to give some information about the importance of

natural resources.

INTRODUCTION

• Hydropower: (hydroelectric power) electric power generated using water power.

• Reservoirs: a large tank or natural or artificial lake used for collecting and storing water for human consumption or agricultural use.

• Otherwise : if things had been different.• Spawn: a mass of eggs of a fish, amphibian, or other water animal.• Emitted: to send or give out something.• Eutrophication: the process by which a body of water becomes rich in

dissolved nutrients from fertilizers or sewage, thereby encouraging the growth and decomposition of oxygen-depleting plant life and resulting in harm to other organisms.

GLOSSARY

• Water resources are sources of water that is useful for humans.

• 97% of water on earth is salt water leaving only 3% as fresh water.

• The ways people use water are: agricultural, industrial, household, recreation and environmental activities.

HOW DO PEOPLE USE WATER RESOURCES

Is estimate that 69%of world wide water use is for irrigation.

Irrigation is the process by which water is brought to land through any of a variety of artificial means.

Aquaculture is a small but growing agricultural use of water.

Food and agriculture are the largest consumers of water, requiring one hundred times more than we use for personal needs. Up to 70 % of the water we take from rivers and groundwater goes into irrigation, about 10% is used in domestic applications and 20% in industry.

AGRICULTURAL

It is estimated that 15% of water use is industrial. Major industrial users include power plants, ore and oil refineries.

Water is used in power generation. Hydroelectricity is electricity obtained from hydropower. Hydroelectric power comes from water driving a water turbine connected to a generator.

INDUSTRIAL

• It is estimated that 15% of water use is of household purposes. This include drinking water, bathing, cooking, sanitation, and gardening.

HOUSEHOLD

Recreational water use is usually a very small but growing percentage of total water use.

Recreational water use is mostly tied to reservoirs. If a reservoir is kept fuller than it would otherwise be for recreation, then the water retained could be categorized as recreational usage.

RECREATION

• Explicit environmental water use is also a very small but growing percentage of total water use. Environmental water usage includes artificial wetlands, artificial lakes intended to create wildlife habitat, fish ladders around dams, and water releases from reservoirs timed to help fish spawn.

• Like recreational usage, environmental usage is non-consumptive but may reduce the availability of water for other users at specific times and places. For example, water release from a reservoir to help fish spawn may not be available to farms upstream.

ENVIROMENTAL

• Problem: Water is decreasing• Objective: Teach people how to save water• Possible solution : Inform the people the

importance of the water and teach them to close the sink when it is watering with out purpose, don’t leave the hose open when you are washing your car or watering your garden.

• Need: Save water $: The government should make a law that

provide the bad use of the water

proposals

• Problem : water pollution• Two types of water pollutants exist; point source and nonpoint

source. Point sources of pollution occur when harmful substances are emitted directly into a body of water. A nonpoint source delivers pollutants indirectly through environmental changes. An example of this type of water pollution is when fertilizer from a field is carried into a stream by rain, in the form of run-off

• Pollution is also caused when silt and other suspended solids, such as soil, wash off plowed fields, construction and logging sites, urban areas, and eroded river banks when it rains.

• Under natural conditions, lakes, rivers, and other water bodies undergo Eutrophication, an aging process that slowly fills in the water body with sediment and organic matter. When these sediments enter various bodies of water, fish respiration becomes impaired, plant productivity and water depth become reduced, and aquatic organisms and their environments become suffocated. Pollution in the form of organic

• Three last forms of water pollution exist in the forms of petroleum, radioactive substances, and heat. Petroleum often pollutes water bodies in the form of oil, resulting from oil spills.

• Objective: teach the people that if the contaminate water not only we are going to have no water but we won´t have animals and plants.

• Possible solution: Don’t throw trash to the rivers, lakes, oceans, ect.• Needs: We need more fresh water that we can drink. $: By the T.V or posters to educate people to save water.• Problem: Climate change• Climate change could have significant impacts on water resources

around the world because of the close connections between the climate and hydrologic cycle. Rising temperatures will increase evaporation and lead to increases in precipitation, though there will be regional variations in rainfall. Overall, the global supply of freshwater will increase. Both droughts and floods may become more frequent in different regions at different times, and dramatic changes in snowfall and snowmelt are expected in mountainous areas. Higher temperatures will also affect water quality in ways that are not well understood. Possible impacts include increased eutrophication. Climate change could also mean an increase in demand for farm irrigation, garden sprinklers, and perhaps even swimming pools.

• Objective : control water from floods by protecting the ozone layer • Possible solution: don’t contaminate, don’t make gases from

factories, cars, buses, ect.• needs: Prevent strong climate changes.• $:the local government should work with the people that are damage

from climate changes.

• Problem: Expansion of business activity• Business activity ranging from industrialization to services such as

tourism and entertainment continues to expand rapidly. This expansion requires increased water services including both supply and sanitation, which can lead to more pressure on water resources and natural ecosystems.

• Objective: don’t use very much water• Possible solution: stop making things that require so much water.• Need: more water

• $: Due to the high pollution of the planet caused by many factories that no matter how bad it is released into the atmosphere all its waste. Would be good if the government tried to implement ways to prevent this happening.

• People in Colombia have collected over 2 million signatures from their fellow citizens in support of a constitutional amendment supporting the fundamental human right to water. Ten days ago the Colombian House of Representatives pushed forward a law which directly contradicts the water referendum and accelerates water privatization in Colombia.

• "A typical family farm consists of 4 people, a dog, 10 chickens, 5 pigs and 5 head of cattle with 400 m2 nursery and garden around the house, at a cost of 191 l / p * d for domestic purposes and productive in a weekend with irrigation. Watering is done every three days in dry season. If this family has coffee consumption increases by 58 l / p * d for two seasons a year and additionally if you have a fish tank is increased by 420 l / p * day "

NEWS

• A person spends 220 liters if you bathe with bath and 30 if showers, a dripping tap at home is 35,000 liters of water per year, a tanker, 145,000 liters per year.

220 liters

35,000 liters of water per year,

Bybliography

• Read more: http://www.lenntech.com/water-food-agricult

ure.htm#ixzz0g54oN0N5

•wisegeek.comwikipedia.orgwww.umich.edu