A pollutant is any substance, chemical or other factor that changes natural :
The pollutant released from motor vehicles :
Among the pollutants motor vehicles produce are various sulfur oxides, nitrogen oxides, unburned hydrocarbons, carbon dioxide, carbon monoxide and particulates.
Lichens do not like to grow in cities because of :-
Carbon dioxide in atmospheric air amounts to be about :
Greenhouse effect is related to :
The greenhouse effect is due to :
Which of the following gases contributes maximum to the 'Greenhouse effect' on earth ?
Which of the following is not a "Greenhouse gas" ?
What are the chief pollutants of the atmosphere which are most likely to deplete the ozone layer ?
Formation of ozone hole is maximum over :
Which of the following is the main factor of water pollution ?
Often in water bodies subjected to sewage pollution, fishes die because of the :
Spraying of DDT on crops produces pollution of :
Soil pollution is chiefly caused due to indiscriminate use of :
Which disease is not water borne ?
The supersonic jets cause pollution by thinning of :
Agricultural chemicals denote :
A logical sequence of carbon cycle is :-
Biogeochemical cycles are also known as :-
Which of the following is a free living nitrogen fixing bacterium present in soil ?
Foot and Mouth Disease is a highly contagious disease almost exclusive to cattle, sheep, swine, goats, and other cloven-hoofed animals. It is caused by
Agroforestry and social forestry both includes
Anthrax is a serious disease of
The IPN (Infectious Pancreatic Necrosis) and VMS (Viral Hemorrhagic Septicemia) are well known infectious diseases of
Viral diseases are severe infectious diseases which spread rapidly from one person to the other. Pancreatic necrosis (IPN) is a viral disease which occurs in salmon fish. It is mainly caused due to the premature killing of the cells in the living tissues.
Viral haemorrhagic septicemia (VHS) is a deadly infectious fish disease caused by the viral hemorrhagic septicemia virus. It afflicts over 50 species of freshwater and marine fish in several parts of the northern hemisphere.
Therefore, the correct answer is option A.
Energy flow in the ecosystem is