any change in the dynamic _______ in aquatic ecosystem (water body/biosphere/atmosphere) disturbs the normal function and properties of pure water and gives rise to the phenomenon of water pollution.

choose a symptom of water pollution of any water body

choose a symptom of water pollution of any water body

choose a symptom of water pollution of any water body

choose a symptom of water pollution of any water body

choose a symptom of water pollution of any water body

The quality of water is not a vital concern for mankind since it is not directly linked with human welfare

Water-borne diseases poses a threat to the health of the general public

The following are the major sources of water pollution. Which one does not belong to the group

Water has an alternative therefore it is not important

All plants, insects, animals and humans have _____ percent of water in their bodies

Our natural resouces of water is infinite

Compared to food or population crisis, water crisis is more

It is unfit for consumption due to high mineral salt content

If you are stranded in a deserted island and you are really thirsty. You drank the sea water. What will happen to you?

In the chemical composition of sea water how many percent is the sodium, chloride and magnesium

In river and lake water how many percent is the carbonate

These pollutants include domestic sewage, pesticides, synthetic organic compounds, plant nutrients (from agricultural run-off), oil, wastes from food processing plants, paper mills and tanneries

These pollutants consists of inorganic salts, mineral acids, metals, trace elements, detergents

soil erosion is what kind of pollutant

This is a pollutant that is caused by mining and processing of radioactive ores to produce radioactive substances

coal-fired or nuclear power fired power plants are sources of

relatively free from surface contamination as it is located more than about 50 ft. below the land surface and the surface water gets filtered or screened by the underlying layers of soil, sand and stone pieces.

Main solution of water pollution mainly for human consumptiob

Soil is an unlimited natural resource

provides water and all the nutrients required by plants for their growth.

The survival of man does not depend upon agricultural crops, grassland and trees which grow on

accounts for loss of 6000 tons of top soil each year.

Dumping of solid wastes on land is quite harmful since heavy metals and toxic elements present in the wastes contaminate the soil and ultimately seep into underground waterafter rainfall.

increases the salt content of soil and makes it saline, thereby decreasing soil fertility.

Each nuclear test is accompanied by _______ which spreads radioactivecontaminants in nearby areas over land and water bodies.

contains lot of pesticides,fertilizers, herbicides which find their way into water courses causing water pollution in addition to soil pollution.

The following are waste hazardous management techniques. Which of the following does not belong to the group

Miscellaneous waste materials are deposited in a regulated mannerin general pit in backyards of houses and municipal areas. These are then covered with _____ thick soil.

includesgarbage from houses and other residential premises. Industrial waste originates from allmineral, manufacturing and processing establishments.

decomposition can also be carried out biologically by means of suitable micro-organisms (bacteria).

incineratorsdoes not need pollution control devices and careful monitoring to make sure that they do not releasetoxic by-products into the environment.

Radioactive wastes from nuclear power stations are generally fused in ____ containers and lowered to the ocean floor.

solid wastes should be deposited in a regulated manner, preferably in

This is the biological process where fresh organic wastes are allowed to be decomposed into humus-like substances

reduces the waste volume by 90 per cent at 900–1000°C.

promising development is the isolation of bacteria which can break down polychlorinated biphenyls (PCBs).

_____ plastics have been developed, which break down on exposure to sunlight.

On exposure to micro-organisms which metabolize glucose, ____ polymers break down into short carbon chains that decomposers can metabolize.