forests. But the earth changed slowly all the time. When parts of the earth became cold and dry, the forests there died. Then dinosaurs could not find enough food to eat.What's another reason? We can make a guess. New kinds of animals came to the earth.Some had big brains and were...
①Thankfully, there is a way out of this trap—but it involves striking a subtle balance.②Helping forests flourish as valuable “carbon sinks” long into the future may require reducing their capacity to absorb carbon now.③California is leading the way, as it does on so many climate effor...
green algae(藻类)growing on their body.This helps them have the same colour with the trees to hide fromtheir predators.But sloths are in danger because of poaching(非法狩猎)and because people are cutting down the forests where theylive.练有所得一学习能力构建1.How long can sloths sleep a ...
Once Upon a Time in the Northeast ,the Treasures in the Cellar The Greater Khingan Range in late autumn is like a vast, colorful masterpiece, painted by nature with the cold wind as its brush. The pine forests stand ev...
Under a long-term plan, China expects to increase its forest coverage rate to 26 percent by 2035. By then, China's forest stock will rise to 21 billion cubic meters, and the area of natural forests will be kept at about 200 million hectares....
Researchers have learned that the soil on Crete was good for growing food . The Minoans raised sheep and grew olives and grapes . As the people's ability to create goods( such as olive oil , wine , and wool ) grew , so did th...
2【题目】Millions of years ago, dinosaurs(恐龙) lived on earth. At that time , the whole earth was warm and wet. T here were green forests and they could find enough to eat. Gradually(渐渐地),parts of the earth became cold and dry and the forests there died. T hen dinosaurs could ...
GERRI WHITLEY —GETTY IMAGES Grasslands get more rain than deserts do. They get less rain than forests. Grasslands are found between deserts and forests. More than Grass DEAN_FIKAR—GETTY IMAGES Grasslands grow all kinds of plants. Wildflowers grow there. Bushes do too. Sometimes, there are tr...
and the verdant greenery makes it an excellent destination for city dwellers to escape the hustle and bustle and get close to nature. Among the lush forests here, one bird species attracts the attention of numerous birdwatchers and nature explorers with its unique charm, and that is the Grey ...
7 hours. If the storage time can be extended in the future, the substitution of this light energy for fossil energy will be more significant. For the development of new energy, China has its own development pattern, in which China's industrial policies played a very important role. For ...