1 . The endangered pandas in the Qinling Mountains might face a new threat: the loss of their food — bamboo, which makes up 99% of their meals.

Adult pandas spend most of the day eating bamboo and have to take in at least 40 pounds a day to stay healthy. However, a new study published in Nature Climate Change warned that they may soon find their food gone because most of the bamboo in the Qinling Mountains might disappear by the end of the century as a result of the rising temperature worldwide.

A team made up of researchers from Michigan State University and the Chinese Academy of Sciences has studied the effects of climate change on the bamboo in the Qinling Mountains. They have found that bamboo is very sensitive to climate change. “80% to 100% of the bamboo would be gone if the average temperature increases 3.5 degrees worldwide by the end of the century,” said Liu Jianguo, one of the report's authors.

He added, “This is how much the temperature would rise by 2100 even if all countries will keep their promises in The Paris Agreement. But you know what is happening around the world.”

In recent years, China has been trying its best to protect the endangered pandas by setting up more and bigger nature reserves.

“But it is far from being enough and the endangered pandas need cooperation from the rest of the world, because their future is not just in the hands of the Chinese,”said Shirley Martin from the WWF but not a member of the team.

There are 345 wild pandas in the Qinling Mountains. That is about 18.5% of the population of China's wild pandas. In addition, about 375 pandas are living in research centers and zoos in China.

A small town in England is teaching the world that it is important     1    (grow) your own food. Any open space     2    (use) to grow fruit and vegetables. There are apples, pears, peaches, strawberries, cabbages and carrots, here and there. Everyone can pick them     3     free. Eight years ago, a woman named Pam in Todmorden dug up her rose garden. She planted vegetables, knocked down the garden walls and put up a sign     4    (say), “Help yourself.” Today, Pam has     5    (complete) changed the town. A new town has been born,     6     is called “Incredible Edible Todmorden”. Pam explained why she thought the idea was popular. “It’s possible and positive. Many people know we have to change,     7     how we do that is a question.” So one day, she gathered all the     8    (villager) together. They decided to do something     9    (differ) at once. They didn’t write reports. They didn’t ask for permission. They just did it. Only a short time later, Todmorden　    10    (become) a big garden of fruit and vegetables. In Todmorden, there is a motto: If you eat, you are in. But that’s not all. There are more than 700 edible towns popping up around the world, from Canada to Mali. People there think about food and protect the environment at the same time.

The public nowadays has a     1     (misunderstand) of forest fires,     2     (believe) that fires should be kept out of every type of forest. Many of us can recall Smoky the Bear’s famous warning: “Remember, only you can prevent forest fires.”     3    , that’s not always the case. Under the right conditions, and when conducted safely, fire can create many environmental benefits as well as help prevent larger,     4     (control) wildfires.

After a forest fire, many wildlife species will move into     5     (recent) burned areas to feed on these newly available foods. Some reptiles and amphibians such as the pine (松树) snake prefer forests frequently     6     (burn) by fire.

If you are asked to picture the forest floor,     7     do you see? Pine needles, cones, leaves, branches might come to mind—all sources of fuel. If these fuel sources build up     8     any type of removal, the “fuel load” can lead to fires catastrophic to forests and people alike. In contrast, prescribed fire can be used by forest professionals every couple of years to keep forest fuels at an appropriate and manageable level. They can also minimize the spread of pest     9     (insect) and disease and remove unwanted tree and plant species. Plus, they can create and maintain important wildlife habitats rich in grasses and promote the     10     (grow) of trees, wildflowers and other various plants.

10 . Some scientists say that animals in the oceans are increasingly threatened by noise pollution caused by human beings.

The noise that affects sea creatures comes from a number of human activities. It is caused mainly by industrial underwater explosions, ocean drilling,and ship engines. Such noises are added to natural sounds. These sounds include the breaking of ice fields, underwater earthquakes, and sounds made by animals themselves.

Decibels(分贝) measured in water are different from those measured on land. A noise of one hundred and twenty decibels on land causes pain to human ears. In water, a decibel level of one hundred and ninety-five would have the same effect.

Some scientists have proposed setting a noise limit of one hundred and twenty decibels in oceans. They have observed that noises at that level can frighten and confuse whales.

A team of American and Canadian scientists discovered that louder noises can seriously injure some animals. The research team found that powerful underwater explosions were causing whales in the area to lose their hearing. This seriously affected the whales’ ability to exchange information and find their way. Some of the whales even died. The explosions had caused their ears to bleed and become infected.

Many researchers whose work depends on ocean sounds object to a limit of one hundred and twenty decibels. They say such a limit would mean an end to important industrial and scientific research.

Scientists do not know how much and what kinds of noises are harmful to ocean animals. However, many scientists suspect that noise is a greater danger than they believed. They want to prevent noises from harming creatures in the ocean.