Q: Dietary supplements are big business, with around half of the Australian population using at least one type per year; most commonly a multivitamin and mineral pill. Many people take supplements as a form of dietary insurance in case they are not meeting their nutrient needs from foods alone. Others take them as a form of health insurance to protect against certain diseases. Some just take them out of habit. Supplements do have a role to play in some situations. People with a diagnosed deficiency, those with malabsorption conditions, women planning pregnancy, and people with very poor diets all can benefit from specific nutrient supplementation. But what about the benefit of supplements across the broad population? The mantra of most health professionals, which is even etched on the label of many supplements, is that supplements may only be of assistance if dietary sources are lacking. To see if this is supported by solid evidence, a systematic review of 63 clinical trials involving some form of supplementation in non-pregnant adults was carried out by a team of medical researchers. The clinical trials were broad in their nature with many nutrients studied including vitamins A, B6, B12, C, D and E; folic acid; calcium; selenium, omega-3 fatty acids; ginkgo biloba; glucosamine; saw palmetto; and milk thistle. All of the studies were randomised controlled trials and evaluated a range of health outcomes including risk of heart disease, cancer, diabetes, bone fractures, cognitive function and all-cause mortality. From the 63 studies, no benefit was seen in 45 studies with 10 of these showing a trend towards harm and just two showing a trend towards a benefit. Of the remaining studies, four showed harm with a greater risk of cancer with beta-carotene and a higher risk of fractures with a once-yearly dose of vitamin D. One study showed a lower risk of cancer with selenium supplementation, but this was not validated in much larger trials. Twelve studies showed a benefit and these mostly involved vitamin D... Question: Why were supplements studied? === The answer to the above question is | OPTIONS:
- To see if they had a benefit for pregnant women
- To see if they had a benefit for the elderly
- not enough information
- To see if they had a benefit for the average adult
A: To see if they had a benefit for the average adult

Q: In 1981, when I was nine years old, my father took me to see Raiders of the Lost Ark. Although I had to squint my eyes during some of the scary scenes, I loved it in particular because I was fairly sure that Harrison Ford's character was based on my dad. My father was a palaeontologist at the University of Chicago, and I'd gone on several field trips with him to the Rocky Mountains, where he seemed to transform into a rock-hammer-wielding superhero. That illusion was shattered some years later when I figured out what he actually did: far from spending his time climbing dangerous cliffs and digging up dinosaurs, Jack Sepkoski spent most of his career in front of a computer, building what would become the first comprehensive database on the fossil record of life. The analysis that he and his colleagues performed revealed new understandings of phenomena such as diversification and extinction, and changed the way that palaeontologists work. But he was about as different from Indiana Jones as you can get. The intertwining tales of my father and his discipline contain lessons for the current era of algorithmic analysis and artificial intelligence (AI), and points to the value-laden way in which we "see" data. My dad was part of a group of innovators in palaeontology who identified as "palaeobiologists" meaning that they approached their science not as a branch of geology, but rather as the study of the biology and evolution of past life. Since Charles Darwin's time, palaeontology especially the study of the marine invertebrates that make up most of the record involved descriptive tasks such as classifying or correlating fossils with layers of the Earth (known as stratigraphy). Some invertebrate palaeontologists studied evolution, too, but often these studies were regarded by evolutionary biologists and geneticists as little more than "stamp collecting". Question: The author very likely works in === The answer to the above question is | OPTIONS:
- mountain climbing
- not enough information
- research or academia
- Indiana Jones
A: research or academia

Q: A long time ago, when humans still lived in cities, on a cold morning near the end of a long, cruel winter, in magnificent Central Park in the middle of magnificent New York City, a young squirrel named Patch was awakened very early by the growls of his empty stomach. A squirrel's home is called a drey. Patch's drey was very comfortable. He lived high up an old oak tree, in a hollowed-out stump of a big branch that had long ago been cut off by humans. The entrance was only just big enough for Patch to squeeze in and out, but the drey itself was spacious, for a squirrel. Patch had lined his drey with dry leaves, grasses and bits of newspaper. It was warm and dry, and on that cold morning he would have liked nothing better than to stay home all day and sleep. But he was so hungry. Hunger filled him like water fills a glass. The cherry and maple trees had not yet started to bud; flowers had not yet begun to grow; the juicy grubs and bugs of spring had not yet emerged; and it had been two days since Patch had found a nut. Imagine how hungry you would feel if you went two whole days without eating, and you may have some idea how Patch felt that morning. Patch poked his head out of the drey into the cold air and shivered as he looked around. Clumps of white, crumbly ice still clung to the ground. Gusts of cold wind shook and rustled the trees' bare branches. The pale and distant sun seemed drained of heat. Patch took a moment to satisfy himself that there were no dangers nearby, no hawk circling above or unleashed dog below. Then he emerged from his drey and began to look for acorns. But what marvels, what miracles, what mysteries are hidden inside those simple words! Question: Why was Patch hungry? === The answer to the above question is | OPTIONS:
- not enough information
- a bird had stolen his food
- he had given his last nut to another squirrel
- it was two days since he had found a nut
A: it was two days since he had found a nut