Migratory birds are well known to navigate over long distances between feeding grounds and breeding sites, often over thousands of miles. Ornithologist G. V. T. Matthews dem...

TF阅读真题第791篇Pollen Gathering by Animals

TF阅读真题第806篇Maya Population in the Classic Period

TF阅读真题第719篇Did a Volcano Destroy the Minoan Civilization?

题目：     Prosperity in British North America     The British colonies of North America developed at a remarkable pace throughout the later colonial period. ...

Tidal Heating on lo     To understand tidal heating, we must go back to when the twin spacecraft Voyager 1 and Voyager 2 made close flybys of the moon lo, Jupiter's clos...

Deer and the Forests of Kinkazan 题目： The ancient beech forests of Kinkazan Island off the coast of northern Japan are in danger of disappearing. Few beech saplings (young tree...

TF阅读真题第680篇Painting in the Dutch Golden Age

TF阅读真题第693篇Iron, Steam, and Factories in Eighteenth-Century Europe

The physical and chemical properties of water, unsurprisingly, determine much about life in the ocean. Water is dense (high mass per unit of volume), about 840 times as dense as ai...