Read the following article and select the best answer. Article: When humans and nature go head to head, nature often ends up losing. Rivers get polluted. Trees are knocked down. Natural resources are exhausted. That's what makes the Galapagos Islands so special--it's one of he few places on the Earth that nature can truly call its own. For people used to having wild animals run at the scent of humans, a visit to the Galapagos is a real eye-opening experience. Over 1,600 km west of Ecuador, the islands are home to a unique variety of animals that have absolutely no fear of people. Visitors can play on the beach with sea lions and giant sea turtles, swim with dolphins and whales, and get close enough to the penguins to count the eggs in their nests. The islands were declared a national park over 40 years ago, and the number of human visitors is tightly limited to avoid damaging he environment or putting stress on the animal. Tourists have to pay a $100 daily visitors fee, and can't step off the boat unless accompanied by an official guide. Once on the islands, you have to stay on the trail , but that seldom presents a problem: the animals are so curious about people that they'll usually come up to say hello. "It's a little like being in a zoo," said one traveler. "But instead of us looking at the animals, the animals, the animals are looking at us." Aside from the wildlife, one of the island' more unusual features is its post office. You can send postcards for free, but the problem is that there's no postman to collect them. Instead, travelers pick up mail addressed to people who live near them back home, and then hand-deliver the postcards when their trip is finished. Question: What is one of the islands' more unusual features? - There're some postmen to collect letters. - There are only the wild life. - You can send letters. - Travellers deliver the letters by themselves.
Travellers deliver the letters by themselves.

(Question)
Read the following article and select the best answer. Article: A new study published recently in the American Heart Association's journal Circulation: Heart Failure reveals that according to a new large study, women who consumed five or more servings of baked fish had a thirty percent lower risk of heart failure in comparison to women who consumed less than one serving a month. Researchers examined the diets of 84,493 women from 50 to 79 years old. The women who consumed a lot of baked fish like salmon received stronger benefits than those who consumed mostly tuna, grouper or white fish. The consumption of baked fish also appeared to provide protection against high blood pressure cardiovascular disease . It also found that those women who consumed more baked fish tended to have a lower body mass index , exercise more and consume more fruits and vegetables in comparison to those who consumed fried fish. Researchers note that past research has discovered that the fatty acids in fish probably decrease the risk of cardiovascular disease by decreasing inflammation and improving blood pressure along with heart and blood vessel functioning. This study does show the link between fish consumption and heart failure risk but it was not designed to show cause and effect. This study also showed that just by consuming one serving of fried fish a week was linked to a 49% greater risk of heart failure. It also found that the consumption of fried fish was linked to a lower fiber intake and a higher calorie intake. Dr Lloyd-Jones, associate professor with North-western's Feinberg School of Medicine, states frequent consumption of baked fish appears to be part of a suitable pattern that is greatly beneficial for numerous things. This advocates that fish is a very good source of lean protein that we should be increasing as a part of our diet. Recommendations from the American Heart Association suggest consuming a minimum of two 3.5 ounce servings of fish especially fatty each week. Question: Why can eating fish decrease the risk of cardiovascular disease? - Because the fatty acids help people take in more nutrition. - Because the fatty acids improve the function of blood vessels. - Because the fatty acids keep blood pressure lower. - Because the fatty acids enlarge people's blood vessels.
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Because the fatty acids improve the function of blood vessels.

Ques:Read the following article and select the best answer. Article: Climate change could affect food supplies, water resources, human health and homes. If greenhouse gas emissions keep increasing at the current rate, global temperature is expected to rise between 2degC and 6degC by 2100. This doesn't sound much, but a 5degC change is the difference between the current warm period and an ice age. Global warming leads to other changes in the climate: melting ice, more evaporation , changes in geographical patterns of rainfall, heavier downpours separated by longer dry spells, more frequent heat waves, more intense hurricanes, and sea level rise. These changes could affect crop growth as drought, increased evaporation and shrinking glaciers disrupt water supply. Some crops could suffer heat stress. While there may be benefits in some regions, overall climate change is likely to have a negative impact on global food supplies. The impacts of climate change on agriculture will vary widely around the world. A global temperature rise of 1-2 degC is expected to increase food production in some regions, particularly mid-latitude areas. But in tropical regions even a small amount of warming could reduce crop yields. A temperature rise of 3 degC or more could threaten global food resources, as all regions are likely to experience negative impacts overall. Freshwater resources could also diminish, especially in tropical regions, as rain patterns change and evaporation speeds up. Some communities could lose essential melt water as glaciers disappear, while more intense rainfall and hurricanes could cause more flooding, leading to water pollution and bacterial diseases such as cholera becoming more widespread. Climate change could lead to a variety of health impacts - both positive and negative. On the negative side, scientists anticipate more cases of malnutrition, heatstroke and waterborne diseases such as cholera. Although some populations will benefit from a reduced risk of cold-related illnesses such as _ , overall a warming world is likely to have negative effects on human... Question: With global temperature increased by 1-2 degC, _ . - crops yields could be increased in tropical regions - food production could rise throughout the world - chances are that food resources would be threatened overall - mid-latitude areas are likely to experience positive impacts

Ans:
mid-latitude areas are likely to experience positive impacts