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This is a place to share your learnings in Geography 12 with other students. You will be required to make at least one post each week. You will be evaluated on your posts so demonstrate geographic vocabulary, knowledge, and thinking. Take it seriously but have fun with it too!
Friday, May 27, 2011
alternative energy
solar panels can be a clean sorce of alternative energy which harness the suns rays and converts it into usable energy. the draw backs to this method is that the sun is not allways going to be readaly available and it is quite expensive to make and install.
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deforestation
this is an example of tropical deforestation, usually happens in brazil or in the amazon.
this happens because the people need to use the land for other porpeses klike farming, or they need it for fuel. the main reason is money though. some things like restricions or premits could be enforced to help stop this.
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oil spills
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the exxon valadez oil spill occured in prince william sund when the exxon valedez ran a ground on the way to lomg beach cali, spilling 750000barrels of crude oil into the ocean. it can be cleaned up by booms surrounding the oil and then it can be skimmed off the surface. chemicals can also help to break it down and help disperse the oil in a less harmful way
Tidal Energy
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Tropical Deforestation
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This is a picture of Tropical Deforestation. It's happening in places such as the Amazon and Brazil. Deforestation is happening for many reasons. Usually it happens because people want to use trees for fuel or use the land for other purposes and most of all because they want to make money. Some Solutions would be to place certain restrictions on cutting, and to replant trees.
Toxic Chemical Pollution
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Thursday, May 26, 2011
Solar
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Energy can be taken from the sun by use of solar panels. The advantages of solar energy is that its abundant and free to take. The drawbacks are that these panels can be very expensive and do need to be replaced over time.
Alternative Energy: Biomass
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source that is used. Its benefits are that it can provide energy by burning waste from trees and other things, which in turn provide steam and energy to power things. Drawbacks of biomass are that it contributes little to our overall energy resources, and is not efficient enough for us to solely rely on.
Coniferous Deforestation
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Coniferous deforestation is happening in places such as Canada. It is happening because of logging, and the greedy lumber companies which are clear cutting these forests. It is resulting in the loss of habitat for some species. Solutions are to place restrictions such as selective cutting.
hydroelectric dams
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PROS: Clean alternative power source. Safer than altnerative options like nuclear power. It can store rain water directly from the river itself. Controls flooding and provides recreational activites (boating, swimming, fishing, ect.)
CONS: You must gloof a huge area of land for the dam to work. They are expensive to build. Disrupts natural seasonal changes in the river, and ecosystems can be destroyed.
-----> geodude.
Wednesday, May 25, 2011
The sun as an energy ( Solar Energy to be technical :)
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Nuclear power
Benifits Clean power and lots of power
Draw back toxic waste natural break down is hundreds of years
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Solar power is a very useful source of energy as it harnesses the sun's energy to produce electricity. It can be sold domestically and can be used to power personal objects such as houses and other buildings. They are reletivly cheap to produce and to install, making it a very popular source of energy. Unfortunatly, it is an intermitant source of energy and is not always available.
Thursday, May 19, 2011
CLEAR CUTTING
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Clear cutting is a practice in which all trees in an area are uniformly cut down, meaning taking mass groups of trees and chopping them all down.
Some companys are doing it for scientific research, safety and economic reasons. Detractors clear cut ruining habitats and helping climate change. Better way to go would be selective cutting everywhere , but that costs more money.
Coniferous Deforestation
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Wednesday, May 18, 2011
YAYA STRIP CUTTING
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This is coniferous strip cutting in Canada...Why? Because lumber supply companies are greedy and there is a constant demand for lumber. but luckily this is only strip cutting, not clear cutting. The consequenses are not that big compared to clear cutting, the animals still have areas to migrate to and there is shade and the other trees can seed the area that was cut. A more sustainable way to cut forests would be selective cutting, everywhere, but that is alot more expensive. Lumber is money.
Deforestation in the Tropics
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Deforestation is the clearance of naturally occurring forests by logging and burning.Tropical deforestation accounts for 20 percent of all human-caused carbon emission in the world, and the governors signing these MOUs with us manage more than 60 percent of the world's tropical forest land. That map shows where. When??? ALL THE TIME....
YAYA OILSPILLS
Eutrophication
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Deforresting
this photo is from a farm taking over the forrest it also show the buring of the land to gain nutitents
Loosestrife (PURPLE)
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Purple loosestrife is an invasive perennial weed that was introduced into North America in the early 1800s. It is believed that it was introduced as a contaminant in European ship ballast and as a medicinal herb. It is highly agressive plant invader of wetlands. It can produce up to 2.7 million seeds per year, and spreads across approximately 480,000 additional hectares of wetlands each year. Ecosystems upset cause the local fauna do not eat the plant.
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This is happening in the tropical rainforest, it is happening because there is a need for more land for farming, money, and the loss of the property owners land. It is happening by the farmers clearing the land and ruining the soil year after year. The consequences are that in a few years they can no longer farm on the land, as well the trees dont grow back fast so the vegetation is not natural to the original cleared spot. The solutions that can be helped to save the forest is to not clear the land just to farm.
Clear Cutting
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oil spill in goldstream
an oil spill was caused by a drunk driver coming into victoria he crashed his tanker spilling all of the fuel aboard
Oil Spills
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Oil spills can occur when leaks in oil tankers and other accidents cause oil to leak into the ocean. It caues many deaths of animals in the ocean and destorys the ecosystem. Oil spills dont have many solutions. First you try to contain all the spill and keep it together. Ways to contan it would be a skimmer that picks up the oil on the surfaces of the water.
Oil Spill
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Oil spills usually occur because someone somewhere driving a boat crashes into a coral reef or a big rock out in sea, leading the boat to spill over 2 million gallons of oil. This effects all sea living creatures, sea otters, seals, whales etc. There are many ways to get rid of the oil in the water by example : filtering water, biological helpers out in the water or chemicals released to seperate water from the oil, which then gets scooped out of the water.
Coniferous Strip Cutting In Canada
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This is coniferous forest deforestation in canada. Why? Because lumber supply companies are greedy but luckily this is only strip cutting, not clear cutting. The consequenses are not that big, the animals still have areas to migrate to and there is shade and the other trees can seed the area that was cut. A more sustainable way to cut forests would be selective cutting, everywhere, but lumber = money.
Post #17 Deforestation
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The image on the left is an image of tropical deforestation in Brazil, South America. The governement has issued free plots of land to poor people in Brazil under the condition that they clear it if they wish to keep it. The problem with this however is after a short time (5-10 years) of cattle grazing the land becomes infertile and uninhabitable. So the the cattle grazers must move onto a new plot of land and clear yet more rainforest. This is a viscious cycle that may untilamtely lead to the death of tropical rainforests in this part of the world. The consequences of these actions is vast amount of cleared, compacted and uninhabitable tracks of land that none can use. Because it has no use and all the biodiversity of the tropical rainforest in this area is now gone. Thereby rendering huge amounts of once lush tropical rainforest now useless barren grassland. Crop rotation or leaving parts of the land they clear fallow for a year could prevent the destruction the land, making it so after the land is cleared it can still be maintained as fertile land. This in turn will halt further clearing and destruction of the land because a sufficient amount of productive land is in use and is sustainable.
Htwo0 abusesssssss
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Wednesday, May 11, 2011
Oil Pollution
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This is a picture of the Exxon Valdez oil spill that occured in Alaska on March 24, 1989. The spill occured upon hitting coral reef off the coast of Alaska. It quickly spread through the ocean waters and affected the wildlife environment. To prevent future incidents like this, equipping ships with double hulls and ensuring they are sufficiently staffed are both measures that have already been put in place.
Thermal Pollution
Farm
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This is a farm in the state of New Mexico where fresh water runoff from the farm is being contaminated with harmful chemicals and then let directly back into the water cycle. This can be harmful to fish and other wildlife aswell as humans. Potential solutions to this problem would be for the farm to grow organic produce without the use of pesticides.
Oil Spill
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An Oil spill is an release of liquid petroleum hydrocarbon into the enviorment due to human activity, and is a form of pollution. Spills can take months or even years to clean up, and oil spills are extremely harmful to animals and the enviorment. A solution could be secondary containment which are methods to prevent releases of oil.
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Solutions to toxic chemical pollution would be to be more cautious about what we dispose of in either down the sink or in the garbage. To have filters in drainage systems so it can catch some of the pollutants. To create certain laws to not have certain products that cause harmful damage to the environment.
Eutro..phic...waaat?
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Eutriphication is the build up of algae. It fertilizes bodies of water with nitrogen and phosphorus. It creates major changes in plant and animal populations. It also degrades water and habitat quality :( Ways you can prevent eutriphication is to STOP USING SO MANY CHEMICALS AND FERTILIZERS WHEN GARDENING! ... or around a body of water.
Oil Spill
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In the photo oil is being leaked out of a boat. In order to avoid disasters like there, building a stronger boat would be a good idea. Or making sure to have enough workers on the boat to stear the ship if someone is to fall asleep. Like the incident where the captian was drunk and passed out cause the boat to hit a rock and spill oil.
sewage
Post#16 Water Abuses
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The image on the left is an image of mining polluting fresh water sources, heavy metals such as mercury and cadmium seep into our rivers and lakes and pollute our freshwater reserves. This kills fish and surrounding wildlife and makes our drinking water unusable. A solution to this could be filtration systems at mining sites to ensure that these heavy metals are not seeping into our natural environment, taxes on this sort of pollution to discourage it and analternative to storing or ridding the mining site of thesetoxins without destroying the natural habitat.
Sunday, May 8, 2011
Purple loosestrife
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Purple loosestrife is an invasive perennial weed that was introduced into North America in the early 1800s. It is believed that it was introduced as a contaminant in European ship ballast and as a medicinal herb. It is highly agressive plant invader of wetlands. It can produce up to 2.7 million seeds per year, and spreads across approximately 480,000 additional hectares of wetlands each year. Ecosystems are upset by it, because local fauna do not eat the plant.
Tropical Rainforest
Desert Biome Adaptaions
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Adaptations for the cactus include: small and spiky leaves that reduce evaporation of water. It also prevents loss of water. The cactus also has a thick and juicy stem that stores water.
Scorpions have have many adaptations for desert living. They have extra layers of fat on their exoskeleton which minimizes water loss. Most are active at night, and spend their days where it is cool and moist under rocks. Scorpions also derive most of their water from their food.
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