As the world's deepest and oldest lake, it contains 20% of the world's unfrozen freshwater. Threats here usually involve industrial discharge and rising temperatures affecting the unique Baikal seal.
Lakes are often referred to as the "canaries in the coal mine" of climate change. Rising temperatures are altering their ecosystems, causing changes in water levels, and affecting the plants and animals that depend on them. For instance, Lake Chad in Africa has shrunk by about 95% since the 1960s due to climate change and over-extraction of water. Similarly, Lake Aral in Central Asia has lost about 75% of its surface area since the 1960s, mainly due to the diversion of rivers that fed it.
Explanation: The author highlights the Aral Sea to illustrate how diverting feeder rivers for cotton farming completely decimated a massive inland water system. Part 3: Multiple Choice Questions
II. Principal Threats
Eutrophication leads to a drop in oxygen levels that suffocates aquatic life. Part 3: Exclusive Answer Key & Explanations 1. v. The shocking scale of global water depletion earth lakes are under threat reading answers exclusive
Lake Poopo used to be Bolivia's second largest lake. Situated in the Altiplano Mountains at an altitude of around 3,700m, the lake in winter would cover an area of some 2,700 square kilometres as it was fed by swollen rivers. With very little rainfall during summer, this reduced to around 1,000, still a remarkable size. This was the pattern in previous centuries, but in December 2015, satellites confirmed the reports of local people that the lake had gone. While scientists had suspected that Poopo would eventually run dry, they didn't expect that this would occur for at least another thousand years. The local mining industry had already contributed to the pollution of the lake, but scientists believe global warming, drought and irrigation projects are all responsible for its disappearance.
Strategies for the IELTS 2 - Test 6 - R - Khóa học sinh viên Drive
Understanding the threats to Earth's lakes is more than just an academic exercise for finding "reading answers." It is a vital part of global conservation. These bodies of water provide drinking water, food, and climate regulation. Protecting them requires a combination of international policy, reduction in agricultural runoff, and aggressive action against global warming.
Be careful with "Not Given" when a text mentions a lake is polluted but doesn't explicitly state it is the most polluted lake in the world. Case Studies Often Found in Exclusive Reading Materials As the world's deepest and oldest lake, it
Beyond these specific IELTS questions, the core threats to the world's lakes are multifaceted and urgent. Let's test your broader understanding of the crisis:
Lakes play a crucial role in regulating the climate, and their degradation could lead to more frequent and intense natural disasters.
Paragraph E shifts to solutions, discussing water-retention policies, international cooperation, wetland restoration, and drip irrigation upgrades. 6. Lake Meads
The world's lakes are facing an unprecedented crisis. These vital water bodies, which cover about 2% of the Earth's surface, are under severe threat due to various human activities and climate change. As per a recent study, approximately 35% of the world's lakes have disappeared over the past century, and many more are on the verge of vanishing. Explanation: The author highlights the Aral Sea to
Lake Chad has shrunk by about 95% since the 1960s due to climate change and over-extraction of water.
This exclusive guide provides everything you need to not only answer the test questions correctly but also to understand the critical environmental message at the heart of the passage. Earth's lakes are a finite resource, and their future depends on the actions we take today.
Publishers like Cambridge University Press do not allow the reproduction of their full reading passages or official answer keys outside their books. The answers above are compiled from public test-taker reports and common academic analysis of that specific passage.
The enrichment of a body of water with nutrients, leading to excessive plant growth and oxygen depletion.