Words like "consequently," "led to," "as a result," and "triggered" point directly to answers for summary completion and matching features.
: Rising global temperatures have caused average lake surface waters to increase by 0.34∘C0.34 raised to the composed with power C per decade since 1985.
The passage links nitrogen and phosphorus runoff to algal blooms, which strip oxygen from the water. earth lakes are under threat reading answers
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
The reading comprehension passage was titled "Earth Lakes Are Under Threat," but for Elara, it wasn't a textbook subject. It was the view from her kitchen window. Words like "consequently," "led to," "as a result,"
The text explicitly mentions that human extraction and agricultural runoff act alongside climate change to damage lakes.
| Word | Definition | Example from Text | |------|-------------|--------------------| | Eutrophication | Excess nutrients causing algal blooms | “Triggers eutrophication – explosive algal blooms” | | Hypoxia | Depleted oxygen in water | “Leading to hypoxia in deep layers” | | Anthropogenic | Caused by human activity | “Anthropogenic pressures are pushing these ecosystems” | | Zooplankton | Tiny aquatic animals | “Ingested by zooplankton, entering the food web” | Chemical fertilizers used in farming contain high amounts
From tourism to transport, shrinking shorelines leave docks stranded and hotels empty, devastating local communities. Moving Toward Solutions
has famously turned a blood-red colour. This eerie transformation is caused by a massive increase in
Perhaps the most direct threat is the diversion of water for irrigation and industrial use. Large-scale farming operations often tap into the rivers that feed major lakes. When these arteries are restricted, the lake downstream begins to wither. The most infamous example is the Aral Sea, which vanished almost entirely due to Soviet-era irrigation projects.
A North American Great Lake frequently cited for its seasonal toxic green algal blooms caused by agricultural runoff from nearby farmlands.