biological magnification water bodies effects

Biological Magnification - Certain harmful substances, usually ones not found in nature but introduced by man, may get into plants and/or animals. These poisonous substances may not be broken down in the body or excreted easily, efficiently and quickly. Instead, they a..

Increased incidence of tumours, ulcers due to nitrate pollution. Increased incidence of skin disorders due to contact with pollutants. Increased incidence of constipation, diarrhea and infections to intestine. Dangerous effects on growing foetus in pregnant women. Concentrat..

The solar spectrum of electromagnetic waves include energy packed heat generating waves called radiation waves. As they lie beyond red colour waves of visible spectrum, they are also called 'infra-red rays'. These infrared rays lie in the wave length range of 700-900 mm. Two types of infrared rays ..

>The dangerous effects of pollution are governed by factors like concentration of pollutant exposure to pollutant area / section of population affected type of pollutant and dangers caused by them process of degradation / metabolism of pollutants Each of the above factors ultimately decid..

(a) Excretion of excess of salts and water (b) Evaporation of sweat causing a cooling effect and helping to maintain body temperatu..

Generally found in land animals which can afford to excrete sufficient volume of water or to concentrate urea in considerable quantity in the urine. It is commonly found in man, whales, seals, desert mammals like kangaroo rats, camels, toads, frogs, cartilagenous fishes, aquatic and semi..

1) Provides imaging of disease tissue with superior resolution power and best pictorial form. 2) Gives information about chemistry, metabolic and bio-chemical data. 3) Non-invasive. 4) Not utilising radiations and so with no side effects. 5) Can study, mostly all body..

. This is primary immune response and the memory B and T cells are generated. When the vaccinated person is attacked by the same pathogen, the memory cells recognise the antigen quickly and control the invaders by producing a large number of lymphocytes and antibodies. These fight against the antig..

. Metabiolically inactive tissue would appear as a darker area comparatively. In a PET scan of human brain, the darkened area indicates damage, may be from a stoke. Bright areas show normal blood flow and normal activity. Thus the doctor can pinpoint the areas of greater brain activity and impaired..

Artificial Kidney - The haemodialyzer or artificial kidney is a machine used to filter the blood of a person whose kidneys are damaged. The process is called haemodialysis. Haemodialysis is defined as the seperation of small molecules from large molecules in a solution by interposing a semipermeabl..