Đề thi HSG lớp 8 môn Anh Tỉnh Ninh Bình năm 2025

Research has shown that over half of the children in Britain who take their own lunches to school do not eat 7.1probablyproperlyproductivelyparticularly in the middle of the day. In Britain, schools have to provide meals at lunchtime. Children can choose 7.2aseitherbothneither to bring their own food or to have lunch at the school canteen.

One shocking finding of this research is that school meals are much healthier than lunches prepared by parents. There are strict 7.3pricesstandardsprofitsbenefits for the preparation of school meals, which have to include one portion of fruit and one of vegetables, 7.4in spite ofbecause ofexcept foras well as meat, a dairy item and starchy food like bread or pasta. Lunchboxes 7.5were examinedexaminedexamininghave been examined by researchers contained sweet drinks, crisps and chocolate bars. Children consume twice as 7.6littlemuchmanyfew sugar as they should at lunchtime.

The research will 7.7workthrowswitchcatch new light on the reasons why the number of overweight students in Britain 7.8had increasedhas increasedwould increaseis going to increase recently.

Unfortunately, the government cannot criticize parents, but it can remind them 7.9withofonat the nutritional value of milk, fruit and vegetables. Small changes in their children's diet can affect their future health. Children can easily develop bad eating habits at this age, and parents are the only ones 7.10whowhichwhatwhom can prevent it.

Global Warming

Most scientists agree that global warming presents the greatest threat to the environment. 10.1 is little doubt that the Earth is getting warmer. In the last century, the average temperature rose about 0.6 degrees Celsius around the world. Many experts warn that global warming will cause sea levels to rise dramatically. In the 10.2 100 years, the oceans have risen 10 to 20 centimeters but that's nothing compared to what 10.3 happen if, for example, Greenland's massive ice sheet were to melt.

Just as the evidence is clear that temperatures have risen in the last century, it's also well established that carbon dioxide in the Earth's atmosphere has increased about 30 per cent, allowing the atmosphere to trap too much heat. 10.4 the exact link, if any, between the increase in carbon dioxide emissions and the higher temperatures is still being disputed. Most scientists believe that humans, by burning fossil fuels such as coal and petroleum, are largely to 10.5 for the increase in carbon dioxide. But some scientists also point to natural causes, such as volcanic activity.

In today's digital world, personal data protection has become an increasingly important issue. With the exponential expansion of the Internet, social media platforms, and online services, individuals are now sharing more personal information than ever before. This data includes not only basic details like names, email addresses, and birthdates but also highly sensitive information such as health records, financial transactions, and location history. Although sharing data online can provide convenience, it also makes users vulnerable to various privacy risks. Cybercriminals can exploit this information for identity theft, fraud, or other malicious purposes, while companies sometimes mishandle data, leading to accidental leaks or misuse.

In response to these risks, governments and organizations have introduced regulations to protect personal data. One major regulation is the General Data Protection Regulation (GDPR), implemented by the European Union in 2018. The GDPR enforces strict rules on how a company collects, stores, and uses personal data. It grants individuals greater control over their information, including the right to access, correct, or delete it. The regulation requires companies to obtain explicit consent from users before collecting any data and mandates that they report data breaches within 72 hours. Violating these rules can result in significant financial penalties, emphasizing the EU's commitment to data privacy.

Despite these regulations, challenges persist. Cybercriminals continuously develop sophisticated methods to bypass security measures, and data breaches remain frequent, affecting millions of users worldwide. Even large, well-protected organizations are vulnerable to breaches, as seen in recent high-profile cases involving major technology companies. Experts recommend that individuals take additional steps to protect themselves, such as restricting the personal information they share online, using strong passwords, enabling two-factor authentication, and being cautious about clicking on suspicious links or attachments.

As technology evolves, the importance of data protection will only increase. Emerging technologies like artificial intelligence, the Internet of Things (IoT), and blockchain have the potential to improve data security but also introduce new privacy concerns. Striking a balance between convenience, innovation, and privacy is crucial as we navigate this digital landscape. Personal data protection is not only a regulatory issue but a shared responsibility, involving users, companies, and governments working together to create a safer online environment.

Bioluminescence

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In the pitch-black waters of the ocean's aphotic zone depths from 1,000m to the sea floor - Good eyesight does not count for very much on its own. Caves, in addition, frequently present a similar problem: the complete absence of natural light at any time of the day. This has not stopped some organisms from turning these inhospitable environments into their homes, and in the process many have created their own forms of light by developing one of the stunning visual marvels of the biological universe - bioluminescence.

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Many people will encounter bioluminescence at some point in their life, typically in some form of glowworm, which is found on most continents. North and South America are home to the "firefly", a glowing beetle which is known as a glow-worm during its larvae stage. Flightless glowing beetles and worms are also found in Europe, Asia, Australia, and New Zealand. Less common flies, centipedes, mollusks, and snails have bioluminescent qualities as well, as do some mushrooms. The most dramatic examples of bioluminescence, however, are found deep below the ocean's surface, where no sunlight can penetrate at all. Here, anglerfish, cookie-cutter sharks, flashlight fish, lantern fish, gulper eels, viperfish, and many other species have developed bioluminescence in unique and creative ways to facilitate their lives.

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The natural uses of bioluminescence vary widely, and organisms have learnt to be very creative with its use. Fireflies employ bioluminescence primarily for reproductive means their flashing patterns advertise a firefly's readiness to breed. Some fish use it as a handy spotlight to help them locate prey. Others use it as a lure; the anglerfish, for example, dangles a luminescent flare that draws in gullible, smaller fishes which get snapped up by the anglerfish in an automated reflex. Sometimes, bioluminescence is used to resist predators. Vampire squids eject a thick cloud of glowing liquid from the tip of their arms when threatened, which can be disorientating. Other species use a single, bright flash to temporarily blind their attacker, with an effect similar to that of an oncoming car which has not dipped its headlights.

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Humans have captured and utilized bioluminescence by developing, over the last decade, a technology known as Bioluminescence Imaging (BLI). BLI involves the extraction of a DNA protein from a bioluminescent organism, and then the integration of this protein into a laboratory animal through transgeneticism. Researchers have been able to use luminized pathogens and cancer cell lines to track the respective spread of infections and cancers. Through BLI, cancers and infections can be observed without intervening in a way that affects their independent development. In other words, while an ultrasensitive camera and bioluminescent proteins add a visual element, they do not disrupt or mutate the natural processes. As a result, when testing drugs and treatments, researchers are permitted a single perspective of a therapy's progression.

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Once scientists learn how to engineer bioluminescence and keep it stable in large quantities, a number of other human uses for it will become available. Glowing trees have been proposed as replacements for electric lighting along busy roads, for example, which would reduce our dependence on non-renewable energy sources. The same technology used in Christmas trees for the family home would also eliminate the fire danger from electrical fairy lights. It may also be possible for crops and plants to luminesce when they require watering, and for meat and dairy products to "tell us" when they have become contaminated by bacteria. In a similar way, forensic investigators could detect bacterial species on corpses through bioluminescence. Finally, there is the element of pure novelty. Children's toys and stickers are often made with glow-in-the dark qualities, and a biological form would allow rabbits, mice, fish, and other pets to glow as well.

Wildlife uses bioluminescence in various creative ways. For example, it mainly serves 22.1 purposes for fireflies. In the world of fish, it can assist them in identifying 22.2 or enticing fishes that are smaller and 22.3 as in the case of anglerfish. As for vampire squids, bioluminescent 22.4 is released with a view to resisting predators. Similarly, certain species blind their attacker with light, which resembles a vehicle approaching without lowering the 22.5.