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in what ways could human activity lead to the extinction of a species in an areahuman activity could lead to extinction of a species by a
state two ways in which sulphur dioxide emissions from coal-fired generating stations could be reduced sulphur dioxide emissions can be reduced by
awhat do you understand by the term monoculture b what is one disadvantage of a monoculture a monoculture is the term applied to the growing of
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which part of the carbon cycle is responsible for the enhancing concentration of carbon dioxide in the atmospherethe burning of fossilized products
a what are the two main pollutants that contribute to acid rain b where do these pollutants come from c what direct or indirect effect is acid rain
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list the short-term and long-term effects of forest destruction a on hillsides b in the tropics a deforestation on hillsides exposes the soil
what are the principal sources of excessive nitrate and phosphate in rivers and lakes excessive nitrates and phosphates come majorly from sewage
a what is the special property of a persistent insecticide b in what ways is persistence i a useful property ii a harmful property a a persistent
distinguish among the terms pesticide insecticide and herbicide a pesticide is a compound which destroys or controls any organism which is
list three human activities which could cause the loss of a species human activities which threaten species with extinction are i hunting of
q what is tricuspid valve annuloplastyit depends upon the cause of tricuspid regurgitation specific therapy is directed towards the particular cause
q haemodynamics of tricuspid regurgitationright atrial pressure tracing shows a prominent lsquov wave and these cannot be appreciated in a patient
q investigation of tricuspid regurgitation by echo dopplerinvestigations ecg in secondary tr shows evidence of right atrial overload and right
q clinical features of tricuspid regurgitationpatients with severe primary tricuspid regurgitation will have symptoms of fatigue dyspnoea and effort
q pathophysiology of tricuspid regurgitationtricuspid regurgitation is associated with prominent venous filling waves and elevated right atrial
a in what ways do farmers try to improve the quality of i their soil ii their crop plants b what other steps do farmers take to maximise
q explain tricuspid regurgitationthough tricuspid regurgitation is a common valvular abnormality on echocardiography rarely is it due to primary
what part do a nitrifying b nitrogen-fixing and c denitrifying bacteria play in the nitrogen cyclea nitrifying bacteria in the soil change ammonia
a meal consists of grilled trout potatoes and mushrooms explain how each item is ultimately the product of photosynthesistrout eat aquatic insects
q medical therapy for tricuspid stenosismedical therapy is ineffective with diuretics symptoms of congestion are replaced by that of low cardiac
q hemodynamic measurements of tricuspid stenosisunless one suspects it clinically and echocardiographically and plans the hemodynamic study -
q investigation of tricuspid stenosis by echocardiographyfindings are subtle one should carefully search for organic tricuspid valve involvement in