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A Delicate World;Watch the video and answer the questions.;Look at the satellite images and answer the questions.;The Aral Sea Crisis
The Aral Sea is situated in Central Asia, between Kazakhstan to the north and Uzbekistan to the south. It was once the world`s fourth largest lake, and contained 10 grammes of salt per litre.The rivers flowing into the Aral Sea are the river Syr Darya from the north and the river Amu Darya from the south. In the 1960s , the two rivers were diverted away from the Aral Sea so that people could irrigate the surrounding desert region and focus on cotton production. As a result, the Aral Sea has been decreasing in size, and by 1997, it had shrunk to a tenth of its original size, splitting into four lakes. By 2009, the south-eastern lake had disappeared altogether, and the south-western lake had been reduced to a thin strip, with a salinity level of more than 110 grammes per litre.; This shrinking of the Aral Sea became known as “one of the planet`s worst environmental disasters”; the decline of the once-thriving fishing industry brings unemployment and economic hardship to the surrounding region.;Aral Sea`s return is possible! ;Macquarie Island
from Chaos to Conservation;Look at the picture and answer the questions.;
; The Macquarie Island is a UNESCO World Heritage site. The native inhabitants existed in perfect harmony with their natural habitat for thousands of years.;From what aspects does the writer introduce the island in para.1?; Inhabitants ;Humans arrived in1810;Time ;1. What’s the author’s mission on the island? ;; Postscript:
In 2014, Macquarie Island is pest-free and its ecology is on the road to recovery.
In 2016, the permanent scientific research station was closed down. ;To analyse how Macquarie Island was saved from destruction.
To inform readers of the chaos caused on Macquarie Island by Humans.
To entertain readers with a funny story about what happened on Macquarie Island.
To suggest ways in which an ec
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