A location with luxuriant growth of lichens on the trees indicates that the:
Lichens are composed of algae and fungi living together in a symbiotic relationship. Sulfur dioxide, is a pollutant which when mixed with rainwater or air can damage lichens and does not allow them to grow due to which they act as natural indicators of air pollution. Therefore the absence of lichens indicates that the area is heavily polluted with sulfur dioxide.
A scrubber in the exhaust of a chemical industrial plant removes:-
The scrubber is an electrostatic precipitator in which the dirty air Is cleaned by capturing the gas like SO2 and other oxides in water/lime spray (CaCO3). The calcium in limestone combines chemically with the sulphur to produce calcium sulphate (CaSO4), which is separately collected.
High value of BOD (Biochemical Oxygen Demand) indicates that :
Biochemical Oxygen Demand or Biological Oxygen Demand is a measurement of the amount of dissolved oxygen (DO) that is used by aerobic microorganisms while decomposing organic matter in water. A high BOD indicates high level of water pollution.
The UN Conference of Parties on climate change in the year 2011 was held in :
The UN Conference of Parties on climate change in 2011, was held in Durban, South Africa. It aimed at decrease of pollutant emission.
Which of the following is NOT one of the prime health risks associated with greater UV radiation through the atmosphere due to depletion of stratospheric ozone ?
Liver cancer is caused due to aflatoxin released by Aspergillus fungus and Vinyl chloride. UV-rays are not related with liver cancer.
The UN conference of Parties on climate change in the year 2012 was held at:
This conference occured from 20 Nov to 8 December, 2012 to extend the life of the Kyoto Protocol at Doha in Qatar.
Acid rain is caused by increase in the atmospheric concentration of: [2015 RS]
60 - 70% SO2 and 20 - 30% NO2 contribute in the acid rain
Eutrophication of water bodies leading to killing of fishes is mainly due to non-availability of :
Due to eutrophication water bodies lack oxygen causing death of aquatic life.
Joint Forest Management Concept was introduced in India during
Joint Forest Management originated in West Bengal accidentally at the Arabari Forest Range in West Midnapore, near Midnapore town in 1971. After the initial successes in West Bengal and Haryana, the JFM schemes received national importance in the legislation of 1988
Depletion of which gas in the atmosphere can lead to an increased incidence of skin cancers
The ozone layer or ozone shield refers to a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet (UV) radiation. It contains high concentrations of ozone (O3) relative to other parts of the atmosphere.
A river with an inflow of domestic sewage rich in organic waste may result in
Domestic sewage rich in organic waste leads to increase in Biological Oxygen Demand, which leads to decrease D.O. (dissolved oxygen) which leads to death of fishes.