Lichens release small quantity of acids which corrode the surface of rock creating minute pores and releasing minerals. With the passage of time these minerals deposit on rock to form a thin layer of soil.
Lichens release small quantity of acids which corrode the surface of rock creating minute pores and releasing minerals. With the passage of time these minerals deposit on rock to form a thin layer of soil.
In a pond, a mass mortality of fish may occur due to following seasons. (i) Passage of pesticide rich water from crop fields. (ii) Release of toxic industrial waste. (iii) Pouring of hot water from an industry or thermal power plant. (iv) Release of waste rich in heavy metals and mercury. (v) BlockaRead more
In a pond, a mass mortality of fish may occur due to following seasons.
(i) Passage of pesticide rich water from crop fields.
(ii) Release of toxic industrial waste.
(iii) Pouring of hot water from an industry or thermal power plant.
(iv) Release of waste rich in heavy metals and mercury.
(v) Blockage of gills of fish by some suspended pollutant such as oil.
Salt water of seas and oceans is unfit for consumption by humans, animals, land plants or industries. Therefore, terrestrial biota and human beings have to depend upon fresh-water resources available on land (such as water present in rain snow, springs, river, lakes, ponds and other freshwater bodieRead more
Salt water of seas and oceans is unfit for consumption by humans, animals, land plants or industries. Therefore, terrestrial biota and human beings have to depend upon fresh-water resources available on land (such as water present in rain snow, springs, river, lakes, ponds and other freshwater bodies (only about 0.5% of the total water on earth). As a result, freshwater needs its conservation
Lichens act as indicators of air pollution. They are sensitive to sulphur dioxide which occurs in sufficient quantity in the atmosphere of Delhi due to large number of vehicles, homes and factories using fossil fuels., Also Delhi exists in semiarid area where atmospheric moisture is low. In Manali aRead more
Lichens act as indicators of air pollution. They are sensitive to sulphur dioxide which occurs in sufficient quantity in the atmosphere of Delhi due to large number of vehicles, homes and factories using fossil fuels., Also Delhi exists in semiarid area where atmospheric moisture is low. In Manali and Darjeeling, the atmosphere is humid and has comparatively low contents of sulphur dioxide.
Mathura refinery emits hydrocarbons and sulphur oxides in its exhaust/fumes. Hydrocarbons induce the formation of ozone which is highly oxidizing. Sulphur dioxide produces acid rain which has a corroding effect on marble. As a result, Mathura refinery does pose problems to Taj Mahal.
Mathura refinery emits hydrocarbons and sulphur oxides in its exhaust/fumes. Hydrocarbons induce the formation of ozone which is highly oxidizing. Sulphur dioxide produces acid rain which has a corroding effect on marble. As a result, Mathura refinery does pose problems to Taj Mahal.
Lichens are called pioneer colonisers of bare rock. How can they help in formation of soil?
Lichens release small quantity of acids which corrode the surface of rock creating minute pores and releasing minerals. With the passage of time these minerals deposit on rock to form a thin layer of soil.
Lichens release small quantity of acids which corrode the surface of rock creating minute pores and releasing minerals. With the passage of time these minerals deposit on rock to form a thin layer of soil.
See lessThere is a mass mortality of fish in a pond. What may be the reasons?
In a pond, a mass mortality of fish may occur due to following seasons. (i) Passage of pesticide rich water from crop fields. (ii) Release of toxic industrial waste. (iii) Pouring of hot water from an industry or thermal power plant. (iv) Release of waste rich in heavy metals and mercury. (v) BlockaRead more
In a pond, a mass mortality of fish may occur due to following seasons.
See less(i) Passage of pesticide rich water from crop fields.
(ii) Release of toxic industrial waste.
(iii) Pouring of hot water from an industry or thermal power plant.
(iv) Release of waste rich in heavy metals and mercury.
(v) Blockage of gills of fish by some suspended pollutant such as oil.
Why does water need conservation even though large oceans surround the land masses?
Salt water of seas and oceans is unfit for consumption by humans, animals, land plants or industries. Therefore, terrestrial biota and human beings have to depend upon fresh-water resources available on land (such as water present in rain snow, springs, river, lakes, ponds and other freshwater bodieRead more
Salt water of seas and oceans is unfit for consumption by humans, animals, land plants or industries. Therefore, terrestrial biota and human beings have to depend upon fresh-water resources available on land (such as water present in rain snow, springs, river, lakes, ponds and other freshwater bodies (only about 0.5% of the total water on earth). As a result, freshwater needs its conservation
See lessWhy do not lichens occur in Delhi where as they commonly grow in Manali or Darjeeling?
Lichens act as indicators of air pollution. They are sensitive to sulphur dioxide which occurs in sufficient quantity in the atmosphere of Delhi due to large number of vehicles, homes and factories using fossil fuels., Also Delhi exists in semiarid area where atmospheric moisture is low. In Manali aRead more
Lichens act as indicators of air pollution. They are sensitive to sulphur dioxide which occurs in sufficient quantity in the atmosphere of Delhi due to large number of vehicles, homes and factories using fossil fuels., Also Delhi exists in semiarid area where atmospheric moisture is low. In Manali and Darjeeling, the atmosphere is humid and has comparatively low contents of sulphur dioxide.
See lessWhy does Mathura refinery pose problems to the Tai Mahal?
Mathura refinery emits hydrocarbons and sulphur oxides in its exhaust/fumes. Hydrocarbons induce the formation of ozone which is highly oxidizing. Sulphur dioxide produces acid rain which has a corroding effect on marble. As a result, Mathura refinery does pose problems to Taj Mahal.
Mathura refinery emits hydrocarbons and sulphur oxides in its exhaust/fumes. Hydrocarbons induce the formation of ozone which is highly oxidizing. Sulphur dioxide produces acid rain which has a corroding effect on marble. As a result, Mathura refinery does pose problems to Taj Mahal.
See less