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Yogita Ingle 6 years, 2 months ago
The cyclic movements of chemical elements of the biosphere between the living organisms and the environment are referred to as biogeochemical cycles.
Bio refers to living organisms and geo refers to rocks, soil, air and water on the earth.
Nitrogen is a major constituent of the atmosphere comprising of about 78% of the atmospheric gas.
Ninety per cent of fixed nitrogen is biological. The principal source of free nitrogen is the action of soil micro-organisms and associated plant roots on atmospheric nitrogen found in pore spaces of the soil. Nitrogen can also be fixed in the atmosphere by lightning and cosmic radiation. In the oceans, some marine animals can fix it. After atmospheric nitrogen has been fixed into an available form, green plants can assimilate it.
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Yogita Ingle 6 years, 2 months ago
The advantages are :
1. Improved Vantage Point,
2. Time freezing ability,
3. Broaded sensitivity,
4. Three dimentional perspective.
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Yogita Ingle 6 years, 2 months ago
Jet streams are winds that blow horizontally from west to east at a high speed near the tropopause and the stratosphere. These are high speed winds which influence the weather and climatic conditions of the region over which they blow.
There are two types of jet streams that blow at the tropical belt of 300 north latitudes- the westerly jet stream and the easterly jet stream.
A branch of westerly jet stream brings moderate to heavy rainfall followed by the cold waves to the Indian subcontinent.
The easterly jet stream also helps the Monsoon winds to blow into the greater part of India and brings monsoon showers.
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Sia ? 4 years, 9 months ago
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Spring Tides |
Neap Tides |
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Spring tides are the result of the moon and sun working together to exert more pull on the earth's oceans. |
Neap tides are the result of the moon and sun working against each other's pull. |
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In Spring tide , the difference between high and low tide is the greatest. |
In Neap tide , the difference between high and low tide is the least. |
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