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: Do you want to see the effects of global warming? Then head north.Will Steger is going to take all of us there. Steger,64, the first person to make a dogsled trip to the Noah Pole,is a very famous and admired polar explorer.He's at home in frozen parts of the world where few humans ever step on.Steger is also a devoted environmentalist who was early to ring the alarm bell on global warming.He saw its effects firsthand in frequent polar expeditions to the Arctic and Antarctica. Steger is about to lead a team of six young adventurers on a 1,400-mile,60-day-long dogsled trip across Ellesmere Island, in the Canadian Arctic.The sea ice in that region should still be frozen."We want to take our audience to the front lines of global warming,"says Steger. The team will be uploading videos,stories and photos to the website global-warming 101.com as they march along,allowing armchair adventurers and kids in classrooms to follow their progress day to day."We can actually bring the audience up there,"Steger says. Stege's team will include some already-famous young explorers.Sam Branson, the22-year-old son of British airline tycoon Richard Branson,is an experienced Arctic traveler.Also on the journey will be 27-year-old Norwegian Sigrid Ekran.Last year,Ekran became only the second woman in history to win Rookie of the Year for the Iditarod Sled Dog Race. What they will see may be surprising.Even Steger doesn't know exactly what to expect.Climate change has already reshaped the geography of the Arctic."Within a decade or less, it's going to be impossible to reach the North Pole by dog team,without flotation ,"says Steger. Climate change is happening,but people can change too.Their willingness to change will determine the shape of Earth's future.
Answer: a famous British airline tycoon
Steger is the following except_.

Article: Pets provide an unconditional love that requires very little on the part of the human. Animals are so special to those of us who love them. We miss them when they are no longer with us. We grieve for them in ways which are just the same as grieving for a human loved one. Whether the end comes through old age, illness, or sudden death, the death of a pet can cause enormous feelings of sorrow, guilt, and loneliness for children and adults alike, as the animal was considered a family member, a child's favoured playmate, or an older person's loyal and faithful companion. Some people don't want a pet because they do die! It's understandable to be unwilling to expose yourself to death but, at the same time, _ . When we live with animals we're more in step with the rhythms of the planet from day to night and from season to season because our companions make us more aware of the changes around us. Our companion animals teach us about the simple gifts of a beautiful day, a good meal and a gentle touch. The death of a pet can make us struggle with our belief structure-a natural part of the grieving period. Whether grieving an animal or human, we question our beliefs and many people find their belief structure becomes stronger when they ask themselves hard questions. Others find a new way of acceptance. And we learn from our animals. Animals aren't afraid to die; they show us that the end of life can be faced without fear. They can teach us to accept death as an opening for love and wonder. Allow yourself to grieve in whatever way is appropriate for you. The loss of a pet is real grief and causes us to travel through the stages of grief-denial, anger, depression, guilt, and acceptance. These stages must be lived through for the mourning to allow full healing.
Answer: pets only provide people with love but never ask for return
According to the passage, the reason why some people don't want a pet may be that _ .

Article: Exercise. Get fit. Watch your weight. We see these messages all around us in magazines and newspapers, but how do you choose the right activity? There are three main goals for fitness. First, strengthening the heart and lungs. Second, strengthening the muscles. Third, controlling body weight. Not all activities will meet each goal. You may center on one goal or, for total fitness, all three. Running No other exercise will help you lose weight faster than running. It also strengthens your heart, lungs, and leg muscles. But it can hurt your joints. If you feel pain in your knees, you need to stop and choose a different activity. Walking This activity puts less stress on the body than running. But to see results you need to get your heart beating faster. This means you'll need to walk fast. Swimming Swimming is a great way to strengthen different pasts of your body. But if weight loss is your goal, you may want to pass on the pool. The water in a swimming pool is cooler than our body temperature. The body naturally protects itself from the cold by keeping fat. Cycling Riding a bicycle will help you lose weight and work your leg muscles. But be careful! If you live in the city, stay on bike path, away from traffic. Or you can ride indoors on a stationary bike. Weight lifting We often hear of elderly people falling and hurting themselves. They just don't have the strength to catch themselves. Lifting weights can prevent that. It also helps prevent injury form other activities. The drawback to weight lifting is that you'll need to pay for a membership at a gym.
Answer: prevent pains in your joints
Running can help you a lot, but it can't _ .