When land is cleared, habitats are lost. It may be cleared for agriculture. It may also be used for building new homes or businesses. Within the past 100 years, the amount of land used for agriculture has almost doubled. Land used for grazing cattle has more than doubled. Many wetlands have also been lost to agriculture. The U.S. has lost almost all the natural tall-grass prairies. Thee areas of tall thick grass have virtually disappeared. These areas of land had thick fertile soil. Their grasses had very deep root systems. These deep and thick roots reduced the amount of soil erosion. They also were home to many plants and animals. Prairies were wonderful places. They were home to colorful flowers, prairie dogs, and herds of bison.

Question: "How can habitats be lost?"

OPTIONS:
- no
- yes

Answer: "Pollution, humans"

Response: no

Washington (CNN) -- The U.S. Food and Drug Administration announced Wednesday that laboratory tests on popular smoking devices known as electronic cigarettes have found they contain carcinogens and other toxic chemicals dangerous to humans. E-cigarettes are battery-operated and contain cartridges filled with nicotine and other chemicals. Known as "e-cigarettes," the devices are battery-operated and contain cartridges filled with nicotine and other chemicals, spiced with flavors such as chocolate, cola or bubble gum. While manufacturers tout e-cigarettes as a "healthy way" to smoke, federal health officials say the devices turn nicotine, which is highly addictive, and other chemicals into a vapor that is inhaled by the user. "The FDA is concerned about the safety of these products and how they are marketed to the public," said Dr. Margaret A. Hamburg, commissioner of the FDA. CNN contacted Florida-based Smoking Everywhere, one of the largest manufacturers of e-cigarettes, after the FDA announcement, and a spokeswoman said the company had no comment. Because e-cigarettes have not been submitted to the FDA for evaluation or approval, the agency had no way of knowing the levels of nicotine or the amounts or kinds of other chemicals that the various brands of these products deliver to the user. That is why the FDA began to test them. The FDA's Division of Pharmaceutical Analysis analyzed the ingredients in a small sample of cartridges from two leading brands of e-cigarettes. In releasing its information, the FDA did not identify the two companies, but said in one sample, diethylene glycol -- a chemical used in antifreeze that is toxic to humans -- was detected. Other samples detected carcinogens that are dangerous to those who smoke them, the FDA said. The FDA has been examining and seizing shipments of non-U.S.-made e-cigarettes at the U.S. border since summer 2008. To date, 50 shipments have been stopped. The products examined thus far meet the definition of a combination drug-device product under the Federal Food, Drug, and Cosmetic Act. "We know very little about these devices, said Dr. Jonathan Samet, director of the Institute for Global Health at the University of Southern California, "but to say they are healthy -- that's highly doubtful."

Question: "Describe some characteristics of e-cigarettes."

Response: "Battery operated,flavoured spices"
OPTIONS:
- no
- yes

A: yes

Problem: Sometimes a full Moon moves through Earths shadow. This is a lunar eclipse . During a total lunar eclipse, the Moon travels completely in Earths umbra. During a partial lunar eclipse, only a portion of the Moon enters Earths umbra. When the Moon passes through Earths penumbra, it is a penumbral eclipse. Since Earths shadow is large, a lunar eclipse lasts for hours. Anyone with a view of the Moon can see a lunar eclipse. So unlike a solar eclipse, it doesnt get dark on Earth. Instead it gets dark on the Moon. Partial lunar eclipses occur at least twice a year, but total lunar eclipses are less common. The Moon glows with a dull red coloring during a total lunar eclipse.

Question: "What is it called when the Moon moves through Earth's shadow completely?"

Answer: "Lunar eclipse"

OPTIONS:
- no
- yes
Answer: yes

Question:
The movie is a powerful story that deals with feminism and patriarchy in the middle class of India . It is shot in the present and past tense showing lives of the characters Mahender and Sudha as they lived together as well as separately . The movie starts with Mahender getting down at the railway station and making his way to the waiting room just as it starts to rain heavily . A woman , Sudha , is already sitting in the waiting room . On seeing him , she tries to hide her face from him but later they confront each other . Mahender has an accomplished business dealing with photography . He respects his grandfather immensely . Incidentally , he had been engaged to Sudha for 5 years but always made some excuse to delay their wedding . However , this time his grandfather has fixed the wedding on the first week of the following month . He reveals to Sudha that he is having an affair with one of the most radical representations of feminism in a girl called Maya . He returns to tell Maya , but Maya has disappeared , leaving him some poetry . Mahender then marries Sudha and is quite happy , but the sudden return of Maya causes tensions in their married life . Mahender frequently tells Sudha about all the beautifully poignant , loving and authentic things Maya did over the years that they lived together . Later , Maya tries to commit suicide , and this leads to Mahender spending time with her over a few weeks . Sudha , not knowing about Maya 's suicide attempt and therefore believing that Mahender is being unfaithful to her , feels that her marriage was a mistake , and questions Mahender about his intentions . After reading the above, is "Tara" the correct answer to the question "What pushed Mahender to spend time away from Sudha?"? OPTIONS:
- no
- yes

Answer:
no

Have you ever seen an egg? Some animals do not have live births. Instead, they lay eggs. The eggs contain the embryo. The embryo matures in the egg. With time, it will hatch. Some animals hatch and do not need care from their parents. They are ready to live on their own. Other animals will still need the care of their parents. Sea turtles break out of their shells. They immediately walk to the ocean. They do this with no help from an adult. Birds stay in the nest for many weeks. They are cared for by their parents. They leave the nest when they are strong enough to fly. Some animals give birth to live offspring. Animals like horses, cows, and whales give live birth. Their offspring are born looking like mini adults.

Question: "Are birds cared for by their parents?"

OPTIONS:
- no
- yes

Answer: "Yes, Birds stay in the nest for many weeks. Sent 14: They are cared for by their parents"

Response:
yes