The high concentration of jute mills in the Hooghly basin are because of the presence of lot of water which is easily available from the Hugli River. Iron and coal also available from Raniganj mines. The suitable type of climate (24°C to 35°C temperature, rainfall of 120 to 150 cm, 80 to 90 % relative humidity ) is found in West Bengal.
The main reason for the earthquakes in India is the tectonic movement. The Indian plate is continuously hitting at Asia plate at a rate of approximately 47 mm/year (anticlockwise).
The main aim of the watershed management strategy of India is to maintain the ecological balance by harnessing, conserving and developing degraded natural resources such as soil.
Withering is used to remove excess water from the leaves and allows a very slight amount of oxidation. The process is also important in promoting the breakdown of leaf proteins into free amino acids and increase the availability of freed caffeine, both which change the taste of the tea.