1. __________________ 2. __________________ 3. _________________
READING COMPREHENSION
I. Read the text and complete the sentences below, using no more than FOUR words. (1.5
pts)
Melting of sea ice in the Arctic has reduced the population size of polar bears and
threatens the species with extinction.
Scientists say that the earlier annual break-up of sea ice caused by climate change is
cutting short the hunting season for the bears, which depend on floating banks of ice to
reach their prey. Lack of sea ice in spring and summer is forcing the hungry polar bear to
spend longer on land. This gives a false impression that their numbers are increasing as
they encroach on human settlements to search for food.
Female polar bears depend on the spring hunting season on order to build the fat
reserves needed to see them through the summer months. But the ice is disappearing, which
means that the bears have not had time to build up normal levels of fat. Since female bears
become thinner, they are easily affected by diseases. Their ability to reproduce and the
survival chances of their cobs decline significantly.
The sea ice provides polar bears with a hunting ground, from which the bears can
reach their prey- wild seals and other marine mammals. Scientists are worried that if the
sea ice season continues to get shorter, polar bears will not be able to spend enough time on
the ice to hunt and feed themselves.
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