Last seen: Mar 10, 2022
(i) Biomagnification (ii) High concentrations of DDT disturb, calcium metabolism in birds, which causes thinning of eggshell and their premature br...
Electrostatic precipitator has electrode wires that are maintained at several thousand volts, which produce a corona that releases electrons. These el...
Characteristics of a modem landfill include: (i) Methods to contain leachate such as lining clay or plastic liners. (ii) Compaction and covering...
Multipurpose trees are that which are grown for more than one purpose or benefits. They may provide food in the form of fruit, seeds, or roots; and al...
Water logging and soil salinity are some of the problems that have come in the wake of the Green Revolution. Irrigation without proper drainage of wat...
The use of Biofertilisers in agriculture is called organic farming. Biofertilisers are organisms that enrich the nutrient quality of the soil. The mai...
Discarded unusable electronic gadgets such as computers, mobile phones, circuits, television sets, etc., form electronic waste. These contain harmful ...
(i) True. (ii) (a) Electricity generation (b) Solar light (iii) A photovoltaic cell is a semiconductor diode that converts visible light into...
High concentrations of DDT disturb calcium metabolism in birds, which causes thinning of eggshell and their premature breaking, eventually causing dec...
In human eye, cornea absorbs UV-B radiation, and a high dose of UV-B causes inflammation of cornea, called snow-blindness.
Realising the significance of participation by local communities, the Government of India in 1980s has introduced the concept of Joint Forest Manageme...
Slash and bum agriculture, commonly called as Jhum cultivation in the north-eastern states of India, has also contributed to deforestation. In slash a...
The National Forest Commission of India recommended a relatively larger forest cover for hills than for plains to reduce the chances of landslides.
The plants growing near the boundary wall act as barriers for sound pollution and act as dust catchers.
CO2 and Methane. CO2 levels are increasing due to burning of fossil fuels, leading to Global Warming.
Yes, the water become septic if the dissolved oxygen drops to zero. Organic pollution (biodegradable) is an example.
Vehicles running on dual mode like petrol and CNG are hybrid vehicle. As CNG is a green fuel there is conservation of fossil fuels and reduction in th...
Yes, carpets and curtains/drapes placed on the floor or wall surfaces can reduce noise level because these are sound absorber substances.
Reforestation is the process of restoring a forest that once existed but was removed at some point of time in the past.