marine biology

These are fish that are sustained in salt-water bodies like seas and oceans. This requires mechanisation. Fishing trawlers fitted with sophisticated electronic fish locating equipment are used for deep-sea fishing. Some marine fish are Bombay duck, Catfish, Mackerels, Red mullet, Sardine ..

They produce carbon monoxide, carbon dioxide, sulphur dioxide, phenol, fluorine, cyanide, particulate matter, etc. Volcanic eruptions release oxides of nitrogen that pollute the atmosphere. Decomposition of organic matter under anaerobic conditions produces methane which on being oxidised in the a..

Fish Farming - This includes inland and marine fisheries, aquaculture and pisiculture. Fish is a source of high quality animal protein and a rich source of minerals like calcium, phosphorus and iron. India abounds in fish, both fresh water and marine..

The term ecology is derived from two Greek words (oikos - means 'house' or place to live and logos means 'a discussion or study'). Literally, ecology is the study of organism 'at home' in their native environment. The term was first introduced by Reiter in 1868, but was fully defined by Ernest Haec..

This includes inland and marine fisheries, aquaculture and pisiculture. Fish is a source of high quality animal protein and a rich source of minerals like calcium, phosphorus and iron. India abounds in fish, both fresh water and marine..

Wild life and forest constitute the biotic resources of nature. Wild life is abundant on land as well as in water, both fresh and marine. Life abounds in all habitats on land and in wat..

Radially symmetrical, diploblastic multicellular animals with a tissue grade of organisation. Aquatic, freshwater or marine solitary or colonial forms which may be free swimming or sedentar..

Free living aquatic forms (freshwater or marine), some amphibious. Body is soft and unsegmented enclosed in a glandular mantle covered by usually a shel..

Water forms the habitat of an enormous variety of organisms. These organisms are called as aquatic organisms. The aquatic habitat may be fresh water or marine environmen..

The various categories of air pollutants and their harmful effects are summarised in the given table: Pollutant Source/Cause Effect Carbon monoxide Automobile exhaust, photochemical reactions in the atmosphere, biological oxidation by marine organisms, etc. Affects..