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    Each year ____(thousand) of tourists visit the polar regions of the Arctic and Antarctica. But the increasing number of people traveling to the ends of the Earth can have ____negative effect on fragile ecosystems. Should tourists ____(allow) to visit polar regions?

    About 40,000 tourists visit Antarctica each year. More than five million travel to the Arctic and sub-Arctic. Transporting tourists to the regions ____(increase) ship and airplane traffic, adding to the risk of pollution, oil spills, and other ____(environment) damage. Because the places where wildlife is accessible ____(be) few in number, tourist traffic can become concentrated in specific areas, ____ (put)Arctic vegetation at risk.

    Others say that access ____these very special parts of the world should not be restricted to only researchers and scientists. Polar tourism allows people to develop deep  ____(person) connections with polar regions. “Those ____travel to the Arctic or Antarctica often become cheerleaders for supporting those places.” Jim Sano, vice president for travel and conservation at World Wildlife Fund, told TFK.

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