Geography

Merits: Most of the canals provide perennial irrigation. This saves the crops from drought conditions and helps in increasing the farm production. Canals carry a lot of sediments brought down by the rivers. The sediments is deposited in the agriculture fields which adds to the fertility. Some of the canals are parts of multipurpose project … Read more

When corals are stressed by changes in conditions such as temperature, light, or nutrients, they expel the symbiotic algae living in their tissues, causing them to turn completely white. Warmer water temperatures can result in coral bleaching. When water is too warm, corals will expel the algae (zooxanthellae) living in their tissues causing the coral to turn completely … Read more

Soil erosion : It is the process by which top layer of soil gets removed thus affecting the productivity by altering the structure of the soil. It is a natural process but human intervention has accentuated the rate of depletion of soil wealth. Soil Degradation:  It is a process through which qualitative degradation of soil … Read more

The reasons for the diversity are as follows:   Over geological times the tropics have had more stable climate than the temperatezones. In tropics, therefore, local species continued to live there itself, whereas intemperate they tend to disperse to other areas. Tropical communities are older than temperate one’s and therefore there has beenmore time for … Read more

Heavy industry relates to a type of business that typically carries a high capital cost (capital-intensive), high barriers to entry and low transportability. The term “heavy” refers to the fact that the items produced by “heavy industry” used to be products such as iron, coal, oil, ships, etc. Location factors are as follows: Availability of raw material … Read more

  The Indian plate includes Peninsular India and the Australian continental portions.  The subduction zone along the Himalayas forms the northern plate boundary in the form of continent— continent convergence. In the east, it extends through Rakinyoma Mountains of Myanmar towards the island arc along the Java Trench. The eastern margin is a spreading site … Read more

. The El Nino-Southern Oscillation (ENSO) is an irregular cycle of change in wind and sea surface temperatures over the tropical eastern Pacific Ocean, affecting the climate of much of the tropics and subtropics. The warming phase of the sea temperature is known as El Nino and the cooling phase as La Nina. This sea … Read more

. Some of the major cropping systems are:  Sequential system Multiple crops are grown in a sequence using short duration crops and intense input management. In Maharashtra, a sequence of Rice, Beans and Ground nuts is  followed. It is the most common cropping system in India. Mixed cropping It refers to crop mixture of two … Read more

Diastrophism refers to deformation of the Earth’s crust due to diastrophic movements (deforming movements) such as folding, faulting, warping (bending or twisting of a large area) and fracturing. All processes that move, elevate or build up portions of the earth’s crust come under diastrophism.  They include: orogenic processes involving mountain building through severe folding (crust is severely deformed into folds) and affecting long … Read more

The cryosphere is the frozen water part of the Earth system. Beaufort Sea, north of Alaska. One part of the cryosphere is ice that is found in water. This includes frozen parts of the ocean, such as waters surrounding Antarctica and the Arctic.   There are places on Earth that are so cold that water … Read more