【题目】完形填空There have bee abou 1I diffrnt Ice Ages on the Earth An Ice Agei along period of coldness. Whenitoccurred, glacirs sowly moving masses ofice,_2_ muc of the Earh's surface.The las Ice Age on the Earth was caled "The Grea Ice Age",it_3 about11,000 years ago ...
C At the end of the last ice age, around 11,700 years ago, Earth's climate began warming rapidly. As the planet heated up, its vast glaciers(冰川) fell back. Almost immediately afterwards volcanic activity surged.That was nothing new. The geological(地质的) record has plenty of evidence...
Since the last ice age, humans have cleared nearly half of the earth’s forests and grasslands for agriculture. With the world population expanding, there’s ever-increasing pressure on farmland to produce not only more food but also clean energy. In places such as Yakima County, Washington, ...
At the end of the last ice age, around 11, 700 years ago, the earth's climate beganwarming rapidly. As the planet heated up, its vast glaciers(冰川) fell back. Almostimmediately afterwards volcanic(火山的) activity increased. That was nothing new. Thegeological record has plenty of evi...
Scientists are now finding mutual relations between models of solar-weather interactions and the actual climate over many thousands of years, including the last Ice Age. The problem is that the models are predicting that the world should be entering a new Ice Age and it is not. 科学家们现在...
The Last Ice Age: Low Seas, Exposed Landmasses During an ice age, sea levels fall as ocean water that evaporates is stored on land on a large scale (ice sheets, ice caps, glaciers) instead ofreturning to the ocean. Earth's Ice Cover20,000 Years AgoToday ...
Historians have long been puzzled by prehistoric markings on walls, bones and tusks. The people who made the markings were nomads during the last Ice Age. Finally historians have managed to read this difficult code and realized that they depict the passing of the days and phases of the moon....
During the peak of the last ice age, northeast Asia (Siberia) and Alaska were connected by a broad land mass called the Bering Land Bridge. This land bridge existed because so much of Earth’s water was frozen in the great ice sheets that sea levels were over 100 meters lower than they...
Since the last ice age, humans have cleared nearly half of the earth’s forests and grasslands for agriculture. With the world population expanding, there’s ever-increasing pressure on farmland to produce not only more food but also clean energy. In places such as Yakima County, Washington, ...
It has long been accepted that the Americas were colonized by a migration of peoples from Asia, slowly traveling across a land bridge called Beringia (now the Bering Strait between northeastern Asia and Alaska) during the last Ice Age. The first water craft theory about this migration was that...