Earth Lakes Are Under Threat Reading Answers -

: No specific details on actions against mining pollution. 11. TRUE : Lake Fracksjön is noted as warming rapidly. 12. FALSE : The cause of Lake Waiau’s disappearance is not definitively known. 13. NOT GIVEN : The cause of Lake Scott's refill isn't explicitly confirmed as rain. Key Vocabulary to Note IELTS READING - Earth's lakes are under threat.pptx

Paragraph 4 defines eutrophication as agricultural runoff rich in nitrogen and phosphorus creating algal blooms. Lake Erie is mentioned as experiencing “annual harmful blooms” threatening drinking water.

Evidence and interpretation

Crucial source; provides employment to over 100,000 people. Urmia Lake

| Question | Correct Answer | Question Type | |----------|----------------|----------------| | 1 | Nearly 90% | Factual recall | | 2 | 27 gigatons/year | Numerical detail | | 3 | Rising global temperatures | Main idea identification | | 4 | Temporary increase then permanent decline | Definition | | 5 | 70–80% | Percentage recall | | 6 | Aral Sea, Lake Poopó | Specific examples | | 7 | Nutrient pollution causing algal blooms; Lake Erie | Vocabulary + example | | 8 | 40 million | Numerical detail (population) | | 9 | Lake Washington, Lake Biwa | Positive evidence | | 10 | False (they accelerate warming) | True/False inference | earth lakes are under threat reading answers

Excessive richness of nutrients in a lake, frequently due to runoff from the land, which causes a dense growth of plant life and death of animal life from lack of oxygen.

Chemical fertilizers used in farming contain high amounts of phosphorus and nitrogen. Rainwater washes these nutrients into nearby lakes, triggering massive algal blooms. This process, called eutrophication, blocks sunlight and depletes dissolved oxygen when the algae die and decompose. The result is massive fish kills and toxic water conditions. Key Themes in Academic Reading Passages : No specific details on actions against mining pollution

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Scientists warn that many lakes are approaching ecological tipping points beyond which recovery becomes impossible. Dried lake beds emit dust and carbon dioxide, creating feedback loops that accelerate climate change. However, solutions exist: restoring natural river flows, reducing fertilizer use, treating wastewater, and cutting greenhouse gas emissions. The partial recovery of Lake Washington in the U.S. and Lake Biwa in Japan proves that intervention works—but only if implemented at scale and with urgency. NOT GIVEN : The cause of Lake Scott's

Section D describes fertilizer runoff, toxic algae blooms, and the resulting lack of oxygen (eutrophication). Summary Completion / Sentence Completion