Questions

The Moscow Metro in Russia carries 8-9 million passengers each day. By comparison, the New york City Subway, USA carries 4.5 million people each day and the London underground , UK, carries just over 3 million.

A tenant farmer is one who resides on land owned by a landlord. These farmers would have to share the yield with the landowner in a process known as sharecropping. In the South, these farmers need to have their own tools and animals.

Sewage treatment generally involves three stages, called primary, secondary and tertiary treatment.

Primary treatment consists of temporarily holding the sewage in a quiescent basin where heavy solids can settle to the bottom while oil, grease and lighter solids float to the surface. This removes material that will either float or readily settle out by gravity. It includes the physical processes of screening, comminution, grit removal, and sedimentation.

Secondary treatment removes the soluble organic matter that escapes primary treatment. It also removes more of the suspended solids. Removal is usually accomplished by biological processes in which microbes consume the organic impurities as food, converting them into carbon dioxide, water, and energy for their own growth and reproduction.

Tertiary treatment includes removal of nutrients such as phosphorus and nitrogen and practically all suspended and organic matter from waste water.

The wide gap between the aims of the French Revolution(equality in economic, social and political life) and the actual conditions in France after revolution created serious discontent among the people. It led to an attempt to overthrow the existing government in France with a view to building a society based on socialist ideas. This attempt, known as Babeuf's conspiracy, is an important event in the history of socialism.

      The conspiracy,as the name indicates, was the work of Noel Babeuf. He was born in 1760 and has participated in the French Revolution . He organised a secret society called the 'Society of the Equals'. 

History of Shimla goes back to the period of Anglo –Gurkha war in the year 1808-09. The British connection with the area developed only after this battle between the Sikh rulers of these hills and the Gurkhas from Nepal.

Honey bees bees belong to the class insects or insecta.

Kelvin temperature scale is the temperature scale that is based upon absolute zero.