Questions

The upper house of the parliament is the Rajya Sabha and is a permanent body.

Genes : The DNA is the genetic material. The DNA is made of several nucleotides. A nucleotide means, one nitrogenous base one sugar molecule and a phosphate molecule. These nucleotides occur in sequences and several nucleotides form one Gene ( a functional mgene is called a cistron)

In the brain cerebellum, the arbor vitae refers to the cerebellar white matter which resembles the structure of arborvitae plant leaves and branches structure.

Environmental science is a field that integrates physical, biological and information sciences to the study of the environment, and the solution of environmental problems. This emerged from the fields of natural history and medicine during the Enlightenment.

In brief, it is a scientific study of the natural world and how it is influenced by people.

A Jig saw puzzle pieces are in different colors which have different shapes. 

You can put it anywhere you like but there is only one right place for it to be fit in it.