Questions

The Early Middle Ages have often been called the Dark Ages, and to some extent  they were truly dark. The people led a miserable life. Education was very uncommon. The helplessness of the comman man the arbitary rule of the king and the barons and the absence of national unity-all these conditions were common in Europe. The term 'Middle Ages' does not cover a uniform period for all the countries of the world.For Europe and the Westren World , the 'Middle Ages' are generally considered to be the period between AD 500 and AD 1500.

United States and Russia have together almost 400 billion tones. Which represents nearly 50% of world's reserves of coal.

A mountain is what has roots that nobody sees, Is taller than trees, Up, up it goes, Yet it never grows.

In DNA, adenine pairs with Thymine. Similarly, in RNA, due to absence of thymine in RNA and the same structure with uracil helps to pair with adenine.

The solubility of a gas in a liquid is directly and inversely proportional to pressure and temperature respectively.