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Wetlands and estuaries are transitional biomes. Land that remains flooded either part of the year or permanently with fresh or salt water is known as wetland. The internationally accepted definition of wetlands is: Areas of fen, peatland or water whether natural or artificial, permanent or temporary, static or flowing, fresh, brackish or marine water, the depth of which does not exceed six metres. Bogs, swamps, marshes are covered by freshwater and found inland. These are known as island wetlands, those found on the coast and covered by seawater are known as coastal wetlands . Wetlands provide a variety of fish and wildlife and are major breeding, nesting and migration staging areas for water birds and shorebirds. Importance of wetlands cannot be underestimated as they act as traps and filters for water that move through them reducing flooding. As a result, sediments are deposited and chemical interactions in wetlands neutralize and detoxify substances in water and slow seeping of water into the ground helps to replenish underground water reserves.
What are the main symptoms of the pulmonary and of the intestinal phases of the ascaris infestation? In the pulmonary stage the ascaris infestation causes cough, hemoptysis, dy
Q. What are the major substances transferred from the mother to the fetus through the placenta? And from the fetus to the mother? From the mother to the fetus the major transfe
Determine Nutritional Requirements for High Altitude? High terrestrial altitudes and mountains have aroused great fascination and cham for mankind. Every year millions of peopl
characteristics of class mamalias
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What are examples of nematodes? Ascaris, hookworm and filaria, all parasites of humans, are instance of nematodes (also called as roundworms).
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Seed Formation A mature seed has seed coat, an embryo and reserve food material in the endosperm in monocots and in cotyledons in the dicots. Figure shows structure of dicots
It is the preparatory phase. Cell organelle replicate and size of the cell increases. DNA molecule undergoes replication. Each chromosome exists as a pair of chromatids joined toge
SPERM A T OCY T OGENESIS In this process four spermatid develop from one PGC. (i) Multiplication phase The spermotogonia or sperm mother cells lie next to the b
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