Question 48
Read this story about whale migration, then answer the questions below.
Grey whales spend the summer in the cold waters of the Arctic Ocean. There is plenty of food for them so they increase their weight by about one-third. In winter the water freezes in the Arctic Ocean. The whales migrate south to the Pacific Ocean off the coast of Mexico. They swim 8000 km in two months! In the warm water the whales have their babies. In spring they swim 8000 km back to the Arctic to feed during the summer.
Why do they have to leave the Arctic Ocean in winter?
Grey whales spend the summer in the cold waters of the Arctic Ocean. There is plenty of food for them so they increase their weight by about one-third. In winter the water freezes in the Arctic Ocean. The whales migrate south to the Pacific Ocean off the coast of Mexico. They swim 8000 km in two months! In the warm water the whales have their babies. In spring they swim 8000 km back to the Arctic to feed during the summer.
Why do they have to leave the Arctic Ocean in winter?
