In this task, you're given an article and an answer. Your task is to generate the fill-in-the-blank question for this answer based on the given article. The blanks are always at the end of the question, and can be filled with more than one word or phrase.

Article: Mattel Inc.is recalling 4.4 million Polly Pocket toys with magnets after some of them caused serious injuries to children who swallowed magnets that fell off.Tiny magnets inside the toys may fall off without being noticed by parents and babysitters.The magnets can be swallowed or placed in children' s noses or ears.When more than one magnet is swallowed, the magnets can attract each other and cause intestine perforations which can be deadly. The Consumer Product Safety Commission received 170 reports of the magnets coming out of these recalled toys.There were three reports of serious injuries to children who swallowed more than one magnet.All three suffered intestine perforations that required operations.A 2-year-old child stayed in hospital for 7 days and a 7-year-old child was hospitalized for 12 days. The recalled Polly Pocket toys contain plastic dolls and accessories that have small magnets.The magnets measure one-eighth inch in diameter and are fixed in the hands and feet of the dolls, and even in the plastic clothing, hairpieces and other accessories to help the pieces stay on the dolls or the dolls' houses. The model number is printed on the bottom of the largest pieces on the toys.Contact Mattel if you cannot find a model number on your product to determine if it is part of the recall.Polly Pocket magnetic toys currently sold in stores are not included in this recall.The model numbers included in the recall are: B2632, B3158, B7118, G8605, H1537 and H3211.The toys were on sales in department stores and toy stores from May 2006 through September 2009. Consumers should immediately take these recalled toys away from children and contact Mattel for the return of the toys.For more information contact Mattel at 888 597-6597 anytime or visit the company' s website.
Answer: inform readers of Polly Pocket toys' recall
The main purpose of the passage is to _ .

Article: Podcasting is like radio broadcasting, except that it uses the Internet. Anyone with a computer and a microphone can record a show about any subject. Anyone with a computer and an MP3 player can download the podcasts and listen. Podcasting does require some technical knowledge, but not very much. Many education-related podcasts are aimed at college students. But a growing number is created for, and by, students in middle school and high school. At mountain View Alternative High School in prefix = st1 /Centreville,Virginia, the students have spent several weeks preparing for their project. They have written their stories. And they have recorded music and other sound to use in their podcasts. Next, they bring together the different elements on a computer. Their teachers help by offering comments and suggestions. The students have made decisions about how to present their information. They have decided how it will be read, and how other sound will be used. Some students decide to read their story themselves. Others choose to create a different effect by having someone else read parts of _ . Through voices, music and sound effects, the students are able to create something deeply personal. With podcasting, students are using their skills in writing, reading and public speaking. At the same time, they are learning several new skills. They learn to work with the computer programs that are used for podcasting. They also gain experience in communications, broadcasting and problem-solving. Podcasts are being used in English classes and social studies, as well as foreign language classes. Being able to listen to recordings of their own voices helps students to hear mistakes. There are tens of thousands of podcasts on the Internet. They can be found on almost any subject, from current events of financial planning and poetry. People are now recording their thoughts on just about everything.
Answer: it makes use of the Internet
Podcasting is different from radio broadcasting in that_.

Article: Farming is moving indoors, where the sun never shines, where rainfall is irrelevant and where the climate is always right. The perfect crop field could be inside a windowless building with controlled light, temperature,humidity,air quality and nutrition. It could be in a New York high- rise or a complex in the Saudi desert. It may be an answer to the world's food problems. The world already is having trouble feeding itself. Half the people on Earth live in cities, and nearly half of those - about 3 billion - are hungry or ill-fed. Food prices, currently increasing, are badly affected by dryness, floods and the cost of energy required to plant, harvest and transport it. And prices will only get more unstable. Climate change makes long-term crop planning uncertain. Farmers in many parts of the world already are using water available to the last drop. And the world is getting more crowded: by mid-century, the global population will grow from 6.8 billion to 9 billion. To feed so many people may require expanding farmland at the expense of forests and wilderness, or finding ways to greatly increase crop output. Gertjan Meeuws and three other Dutch bioengineers grow vegetables and house plants in closed and regulated environments. In their research station, water flows into the pans when needed, and the temperature is kept constant. Lights go on and off, creating "day" and "night", but according to the rhythm of the plant. Meeuws says a building of 100 square meters and layers of plants could provide a daily diet of 200 grams of fresh fruit and vegetables for the entire population of Ken Bosch, about 140,000 people. Their idea isn't to grow foods that require much space, like corn or potatoes. Sunlight is not only unnecessary but can be harmful. Plants need only specific wavelengths of light to grow. Their growth rate is three times faster than under greenhouse conditions. They use about 90 percent less water than outdoor agriculture. And city farming means producing food near the consumer, so there's on need to transport it long distances.
Answer: uses more water than outdoor farming
According to the text, Gertjan Meeuws' farming _ .