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Is the weather changing?
People around the world are beginning to worry about extreme weather conditions (1) which have caused many problems across the planet. In 2014, many parts of North America were hit by freezing cold weather (2) which brought a lot of snow. At the same time, California and Brazil. (3) where there was not enough rain, had the hottest summer since records began. Australia also had a hot summer with terrible fires (4) which destroyed a lot of the countryside.
Scientists (5) who study the weather are worried that climate change might get worse. They believe that one reason for this change is pollution (6) which causes global warming. Another reason may be El Niño or La Niña events, (7) which happen every few years. In the Pacific Ocean, (8) where the temperatures sometimes become higher or lower than normal, El Niño or La Nina events can seriously change the weather patterns for months or years.
Many animal and plant species are in danger because of this. For example, polar bears. (9) whose homes are on arctic ice, are having trouble finding food. The North Pole ice (10) where they live is melting and they have to swim very far to find food. The people (11) who are studying these climate changes have given us the facts. Now we must stop polluting this planet (12) which is our home.