In nature, you may see many insects(昆虫) and animals of different colors. Have you ever wondered why?

    Locusts are super delicious food for birds, but it is not always an easy job for birds to catch them. It is neither because locusts are good jumpers or runners nor because they are smarter than their enemies. The reason is that the colors, of locusts change with the colors of crops(庄稼). When crops are young, locusts look green. But when autumn comes, locusts change to the yellow and brown color as crops do.

    Brown bears, tigers and other animals move quietly through forests. They can't be seen easily by their enemies. This is because they have colors similar to the trees. For the same reason, polar bears that live on a land of snow and ice are white. Butterflies and bees living among the flowers are colorful like flowers. Soil insects are mostly dark colored and they live under the soil(土壤)in a dark and wet environment. However, insects with colors different from plants can easily be found and eaten by others. So in order to survive, they have to hide themselves in the daytime and appear only at night.

    Have you ever noticed some even stranger acts? The ink fish in the sea can send out some very black ink when it faces danger. As the ink spreads over, its enemies will find themselves suddenly in a dark world. At the same time the ink fish immediately swims away. That is how it keeps itself safe though it is not strong at all.

Dear Editor,

    A recent report says that the global warming will lead the penguins to lose half or two thirds of their home. ……

Jane Goodall is a famous scientist. For more than 40 years, Goodall lived mostly in Tanzania in East Africa, studying chimpanzees.

    As a young child, Jane Goodall was interested in animals. She grew up in the English countryside and was always climbing trees or riding horses.

When Jane was 23, she got a chance to go to Africa even though she had never been to college，she got a job with a famous scientist named Louis Leakey.

One day Louis Leakey said he needed a volunteer. He needed someone to go to a lake in Tanzania to study a kind of chimpanzees. Jane was excited.

    On July 16,1960, she began her exploration（探索）. At first, the chimpanzees ran away from Jane. But with time passing，they got used to her being around.

    Every day，Jane would follow the chimpanzees，taking notes on their behavior. She learned many new things about chimpanzees. She watched how a chimpanzee made a tool. She learned how some chimpanzees became good leaders. She watched how mother chimpanzees raised their children. She watched animals get angry and get upset. She wrote everything down so others would understand animals as she did. She learned that if you pay really close attention to animals，you will understand what they are “saying”.

    There are many wetlands in China and some of them have become the world's important wetlands. The Chinese Yellow Sea Wetlands are among them. They are in Yancheng, Jiangsu Province. They are home for many different kinds of animals. The world's largest Milu Deer Nature Reserve is in them. More than 700 Milu deer live freely there. There are not many red-crowned cranes in the world, but every winter you can see some in the Red-crowned Crane Nature Reserve in the Yellow Sea Wetlands.

The temperature in the wetlands is usually neither too high nor too low. There is a lot of rain and sunshine, too. They are really good places for wildlife. Offering(提供) food and home for some special kinds of animals is not the only reason why we need to protect wetlands. Wetlands are important because they also prevent flood. But some people want to change the wetlands to make more space for farms and less space for wildlife.

    Luckily, more and more people are beginning to realize the importance of wetlands and wildlife. Every year, on February 2nd, many activities are held to tell people more about wetlands.