Golden Quadrilateral Comprising National Highways connects Delhi-Mumbai-Chennai-Kollata-Delhi (by six lane wuper highways).

At present biosphere reserves that are included in world are Heritage Nilgiri, Nanda Devi, Nokrek, Gulf of Mannar, Sunderban, Simlipol and Pachmarhi.

Sedimentary rocks are formed by the accumulation of sediments. There are three basic types of sedimentary rocks. Clastic sedimentary rocks such as breccia, conglomerate, sandstone, siltstone, and shale are formed from mechanical weathering debris.

Damodar Valley Corporation has a network of four major dams in Jharkhand, such as Maithon on Barakar river, Tilaiya on Barakar River, Konar Dam on Konar river,Panchet on Damodar river.

It is a joint undertaking by the governments of Andhra Pradesh and Karnataka. The project comprises a dam across the Tungabhadra River near Mallapuram. It is a power project of Gujarat equipped with power generating sets manufactured by Bharat Heavy Electricals Limited was inaugurated on October 12,1977.

The Koppen climate classification scheme divides climates into five main climate groups:
I. tropical
II. dry
III. temperate
IV. continental
V. polar

The Asian (or Indian) elephant is the largest terrestrial mammal in Asia, with a maximum shoulder height of 3.2 m. It is smaller than the African elephant (Loxodonta africana), with relatively smaller ears, and the head (not the shoulder) is the highest part of the body.

In 1990 India ratified the world Heritage Convention of 1977 identifying four natural sites of outstanding universal value namely Kaziranga National park (Assam), Keoladeo National Park (Rajasthan), Sundarbans Biosphere Reserve (West Bengal) and Nanda Devi Biosphere Reserve (Uttarakhand).

A dense tropical rain forest usually having a cloud cover, especially one in the Amazon basin of South America.

The Kosi River is known as the "Sorrow of Bihar" as the annual floods affect about 21,000 km² (8,100 sq mi) of fertile agricultural lands thereby disturbing the rural economy.

ICFRE is the largest organisation responsible for forestry research in India. ICFRE was created in 1987, under the Central Ministry of Environment and Forests (India), to direct and manage research and education in forestry sector in India. ICFRE is headed by a Director General with headquarters at Dehradun.

Venus is very similar to Earth in size and mass - and so is sometimes referred to as Earth's sister planet - but Venus has a quite different climate.

Cosmology is the scientific study of the large scale properties of the universe as a whole. It is the study of universe as a whole: its birth, growth, shape, size and eventual fate.

The large natural ecosystem comprised of abiotic (land, air , water and soils of the concerned habitat) and biotic (plants, animals and micro-organisms) is called Biome.

The highest glacial lake of India is Devtal which is located at the height of 17,745 feet AMSL in Garhwal Himalaya.

Project Tiger is a tiger conservation programme launched in 1 April, 1973 by the Government of India during Prime Minister Indira Gandhi's tenure.

Titagarh, Amlai and Nepanagar are known for Paper Industry.

The energy received by the earth is known as incoming solar radiation which in short is termed as insolation. As the earth is a geoid resembling a sphere, the sun's rays fall obliquely at the top of the atmosphere and the earth intercepts a very small portion of the sun's energy.

Sandstone, conglomerate, limestone, shalepotash, loess, geyserites, chalk, coal, chert, halite are the examples of Sedimentary Rocks.

Thermocline, oceanic water layer in which water temperature decreases rapidly with increasing depth. A widespread permanent thermocline exists beneath the relatively warm, well-mixed surface layer, from depths of about 200 m (660 feet) to about 1,000 m (3,000 feet), in which interval temperatures diminish steadily.

Modern steel making in India began with the setting of first blast furnace of India at Kulti in 1870 and production began in 1874, which was set up by Bengal Iron Works.Tata Iron and Steel Company (TISCO) was established by Dorabji Tata in 1907, as part of his father's conglomerate.

India is the second largest sugar producing country of the world after Brazil. In 1840, the first sugar industry was set up in Betia (Bihar). Sugar production is known in India since ancient times, but modern sugar industry in India developed in first decade of the twentieth century.

Sex ratio is used to describe the number of females per 1000 of males. In the Population Census of 2011 it was revealed that the population ratio in India 2011 is 943 females per 1000 of males. Haryana has the lowest sex ratio (877) in Indian states while in union territory Daman & Diu has lowest sex ratio of 618.

This region is located on the Chotanagpur plateau and extends over Jharkhand, Northern Orissa and western part of West Bengal. The birth and growth of this region is linked with the discovery of coal in Damodar Valley and iron ore in the Jharkhand-Orissa mineral belt. As both are found in close proximity, the region is known as the ‘Ruhr of India’.

Transhumance is a type of pastoralism or nomadism, a seasonal movement of livestock between fixed summer and winter pastures. In montane regions (vertical transhumance), it implies movement between higher pastures in summer and lower valleys in winter. Herders have a permanent home, typically in valleys. Generally only the herds travel, with a certain number of people necessary to tend them, while the main population stays at the base. In contrast, horizontal transhumance is more susceptible to being disrupted by climatic, economic, or political change.

The Territory of the Saar Basin (German: Saarbeckengebiet, Saarterritorium; French: Le Territoire du Bassin de la Sarre) was a region of Germany occupied and governed by the United Kingdom and France from 1920 to 1935 under a League of Nations mandate.

Puducherry lies in the southern part of the Indian Peninsula. The areas of Puducherry district and Karaikal district are bound by the state of Tamil Nadu, while Yanam district and Mahé district are enclosed by the states of Andhra Pradesh and Kerala respectively.

In 2019, Saturn has unseated Jupiter as the solar system's most moon-bearing planet. Scientists discovered 20 previously unknown moons orbiting Saturn, which gives Saturn a grand total of 82 moons, flying past Jupiter's 79.

The mean thickness of oceanic crust and continental crust is around 5 kilometer and 30 kilometer respectively.

The place/city located at the confluence of river Euphrates and Tigris is Baghdad. Major canals that flowed from the Euphrates into the Tigris in the vicinity of Baghdad.