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The Changes of the Environment from the 1950's to the 2000's
Transcript of The Changes of the Environment from the 1950's to the 2000's
from the 1950's up to the 2000's The 1950's Above, Timber Creek in the Northern Territory in 1950. There is a widespread view that the cause of thickening is an interaction between fire and grazing; however in some areas thickening is occurring as there is no grazing, and in other areas uncontrolled wildfire is causing a decrease vegetation. We need to gain a more broad understanding of the direction of change in savannah ecosystems. The 1960's To the left, a termite reaking havock during the late 1950's to the early 1960's
In the late 1950’s, pesticides started to become a trouble for the average resident. The government had to ask Congress for $2.5 million to eradicate an insect pest that stripped trees in the North-Eastern forests. The plan was to spray up to 3 million acres with a mixture of DDT and oil. Within a month after the spraying started, residents nearby were complaining that the eradicators were flying too low and were spraying to heavily. During high winds all the DDT was killing was fish, birds and other animals within the area.
The 1970's To the right, air pollution being let up in the atmosphere. During the 1970’s air pollution was cut back dramatically around the world through the use of catalytic converters on new cars that use only unleaded fuel. But the predicted ‘pollution free car’ proves to be too great a task for environmentalists. Ozone depletion from fluorocarbons is finally taken seriously during this decade, even by conservatives such as Ronald Reagan and Margaret Thatcher of Britain, who join others sign the Montreal Protocol in 1987. The hole grew so large it reaches the most southern parts of Australia and New Zealand. As a result the amount of ODS (ozone depleting substances) have been cut back dramatically. The 1980's Above, the hole in the ozone layer over Antartica. The 1990's On 15 December 1993, the rock was renamed "Ayers Rock / Uluru" and became the first officially dual-named feature in the Northern Territory. The order of the dual names was officially reversed to "Uluru / Ayers Rock" on 6 November 2002 following a request from the Regional Tourism Association in Alice Springs. Finally, above, Uluru or Ayers rock in the Northern Territory. At the beginning of the 21st century global climate change was largely considered a problem for the distant future, but it seems in these present times it is not apparent. Over the past few years the government has installed many renewable energy sources such as wind farms. They have also offered insulation to decrease the use of air conditioning, low cost solar panels and energy monitors to know when your using energy for no reason. During the earlier half of the decade australia went through a drought, now the dams are dumping water into the oceans. The 2000's to the present