Geography

DRAW MAP Major Iron ore reserve are in : Odisha The ores are rich in haematites.India’s richest haematite deposits are located in Barabil-Koira valley.Others: Sundargarh, Mayurbhanj, Cuttack, Sambalpur, Keonjhar and Koraput districts. Jharkhand 25 per cent of reserves.First mine in Singhbhum district in 1904.Iron ore of here is of highest quality and will last for … Read more

India is the second populous country after china. India has 17.74% of the total world population. The main reason for the high population growth is the high fertility rate which is presently 2.5. It means an Indian women in her reproductive span produces 2.5 offspring on an average. The reasons for high fertility rate are … Read more

The jute industries are majorly located in eastern region of the country. About 25% of the workforce are enrolled in the jute industry. 80% of the industries are in West Bengal only. The reasons for the high concentration of Jute Industries are as follows: Soil: The alluvial conditions of Eastern Bengal offer ideal environment for … Read more

The population structure associated with a DD is a natural stage of the demographic transition, which is when countries change from having high birth and death rates to having low birth and death rates. The first stage of the transition is typically a fall in child mortality due to improvements in healthcare, nutrition and overall … Read more

El-nino is the classical phenomenon where warming of Pacific ocean takes place near the western coast of Peru and Equador. It occurs at every 3-4 years. It weakens the trade winds and changes in southern oscillation , thereby affects the rainfall pattern across the world. Southern oscillation: Southern oscillation is the alternating of sea level … Read more

Constituting about 6.3% of the global fish production, the sector contributes to 1.1% of the GDP and 5.15% of the agricultural GDP.  There are two branches of fishery sector namely Inland Fisheries and Marine Fisheries. The total fish production has nearly 65% contribution from the inland sector and rest form marine fishing.  Fish and fish … Read more

Sand miningis a practice that is used to extract sand, from various environments, such as beaches, inland dunes and dredged from ocean beds, and river beds of deltaic regions. The mining is in operation in all the continents of the Globe. Environmental problems occur when the rate of extraction of sand, gravel and other materials … Read more

The monsoons in India form two branches: the first, the southwest monsoon, sweeps from the Arabian Sea and drenches the Malabar coast of western India and then sweeps down towards Sri Lanka. The second, the southeast, moves northward around the same time from the Bay of Bengal and drenches Bangladesh and eastern Indian and then … Read more

Tides The ocean’s surface rises and falls predictably attributable to changes in gravitative forces originating from the Moon and also the Sun. These changes in ocean surface level are called tides and are proof of the influence celestial bodies wear our planet. As a result of the Sun is farther away than the Moon, the … Read more

The following factors affect the distribution of temperature of ocean water: Latitudes The temperature of surface water decreases from equator towards the poles because the sun’s rays become more and more slanting and thus the amount of insolation decreases poleward accordingly. The temperature of surface water between 40°N and 40°S is lower than air temperature … Read more