Air and Water Pollution

Air and Water Pollution
The continent whose rivers are most polluted in world is:
Africa
Asia
North America
South America
Author: rikazzz Comment
Air and Water Pollution
The way in which plants die because of dropped level of oxygen is classified as:
eutrophication
allotrophication
oxygenation
de-oxygenation
Author: rikazzz Comment
Air and Water Pollution
The chemical substance used to destroy the weeds in crops is called
herbicides
monoxides
carob-oxides
pesticides
Author: rikazzz Comment
Air and Water Pollution
The causes of air pollution includes
chlorofluorocarbon
cars and motor vehicles
power plants and industries
all of above
Author: rikazzz Comment
Air and Water Pollution
The water that is stored in layer of porous rocks under the ground is called
deoxygenated water
underground water
allotropic water
lead water
Author: rikazzz Comment
Air and Water Pollution
The addition of harmful substances that has bad effects on environment and living things is classified as:
allotrophication
eutrophication
atmospheric pressure
pollution
Author: rikazzz Comment
Air and Water Pollution
The large number of organisms can die if there is:
low level of oxygen
low level of carbon dioxide
low level of methane
low level of ethane
Author: rikazzz Comment
Air and Water Pollution
According to World Health Organization, the percentage of the deaths due to environmental factors is:
85%
25%
50%
65%
Author: rikazzz Comment
Air and Water Pollution
The natural source of pollution is:
rain forest
mining for minerals
forest fire
falling of meteoroids
Author: rikazzz Comment
Air and Water Pollution
During the process of photosynthesis, the element that plants give off is:
methane
carbon dioxide
oxygen
ethane
Author: rikazzz Comment

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