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4、次の英文を読み、 設問に答えなさい。
Hello, everyone! Today, I'd like to talk about the Great Barrier Reef, World Heritage
Site in Australia. It's the world's largest reef system and consists of over 2,900 reefs.
It's longer than Honshu Island. We can see a lot of colorful coral there.
Do you know what coral is? It looks like a plant, but it's actually a hard shell formed
by animals. The animals are called coral polyps. They lay eggs after the full moon in
spring.
The Great Barrier Reef is now facing a crisis. More and more coral is turning white.
In fact, it's dying because of global warming, water pollution, erosion, and s0 on. This
phenomenon is called “coral bleaching." Some scientists say that 80 percent of the
Great Barrier Reef will be lost by 2050 if this environmental situation continues. I
wonder if future generations will be able to see these beautiful reefs decades from now.
There are a lot of coral reefs around the world. It's very important to protect these
precious coral reefs. How can we do this? Well, to prevent global warming, we should
save energy such as electricity and reduce the amount of carbon dioxide in the
atmosphere. There are many small things we can do at school and home.
I believe that our small actions will make a big difference in the end. Thank you for
listening.
